Airport security refers to the techniques and methods used in protecting passengers, staff and planes which use the airports from accidental/malicious harm, crime and other threats.
- 1 Description
- 2 Airport enforcement authority
- 3 Process and equipment
- 4 Notable incidents
- 5 Airport security by country
- 6 See also
- 7 References
- 8 External links
Large numbers of people pass through airports every day. This presents potential targets for terrorism and other forms of crime because of the number of people located in one place. Similarly, the high concentration of people on large airliners, the potential high death rate with attacks on aircraft, and the ability to use a hijacked airplane as a lethal weapon may provide an alluring target for terrorism.
Airport security attempts to prevent any threats or potentially dangerous situations from arising or entering the country. If airport security does succeed then the chances of any dangerous situation, illegal items or threats entering into an aircraft, country or airport are greatly reduced. As such, airport security serves several purposes: To protect the airport and country from any threatening events, to reassure the traveling public that they are safe and to protect the country and their people.
Monte R. Belger of the U.S. Federal Aviation Administration notes "The goal of aviation security is to prevent harm to aircraft, passengers, and crew, as well as support national security and counter-terrorism policy."
While some countries may have an agency that protects all of their airports (such as the United States, in which the Transportation Security Administration polices the airport), in other countries the protection is controlled at the state or local level. The primary personnel will vary and can include:
- A police force hired and dedicated to the airport e.g. the Irish Airport Police Service
- A branch (substation) of the local police department stationed at the airport
- Members of the local police department assigned to the airport as their normal patrol area
- Members of a country's airport protection service
- Police dog services for explosive detection, drug detection and other purposes
Other resources may include:
Process and equipment
Some incidents have been the result of travelers carrying either weapons or items that could be used as weapons on board aircraft so that they can hijack the plane. Travelers are screened by metal detectors. Explosive detection machines used include X-ray machines and explosives trace-detection portal machines (a.k.a. "puffer machines"). In the United States the TSA is working on new scanning machines that are still effective searching for objects that aren't allowed in the airplanes but that don't depict the passengers in a state of undress that some find embarrassing. Explosive detection machines can also be used for both carry-on and checked baggage. These detect volatile compounds given off from explosives using gas chromatography.
A recent development is the controversial use of backscatter X-rays to detect hidden weapons and explosives on passengers. These devices, which use Compton scattering, require that the passenger stand close to a flat panel and produce a high resolution image. A technology released in Israel in early 2008 allows passengers to pass through metal detectors without removing their shoes, a process required as walk-though gate detectors are not reliable in detecting metal in shoes or on the lower body extremities. Alternately, the passengers step fully shoed onto a device which scans in under 1.2 seconds for objects as small as a razor blade. In some countries, specially trained individuals may engage passengers in a conversation to detect threats rather than solely relying on equipment to find threats.
Generally people are screened through airport security into areas where the exit gates to the aircraft are located. These areas are often called "secure", "sterile" and airside. Passengers are discharged from airliners into the sterile area so that they usually will not have to be re-screened if disembarking from a domestic flight; however they are still subject to search at any time. Airport food outlets have started using plastic glasses and utensils as opposed to glasses made out of glass and utensils made out of metal to reduce the usefulness of such items as weapons.
In the United States non-passengers were once allowed on the concourses to meet arriving friends or relatives at their gates, but this is now greatly restricted due to the terrorist attacks. Non-passengers must obtain a gate pass to enter the secure area of the airport. The most common reasons that a non-passenger may obtain a gate pass is to assist children and the elderly as well as for attending business meetings that take place in the secure area of the airport. In the United States, at least 24 hours notice is generally required for those planning to attend a business meeting inside the secure area of the airport. Other countries, such as Canada or Australia do not restrict non-travellers from accessing the airside area, however non-travellers are typically subject to the same security scans as travellers.
Sensitive areas in airports, including airport ramps and operational spaces, are restricted from the general public. Called a SIDA (Security Identification Display Area), these spaces require special qualifications to enter. Systems can consist of physical access control gates or more passive systems that monitor people moving through restricted areas and sound an alert if an restricted area is entered.
Throughout the world, there have been a few dozen airports that have instituted a version of a "trusted traveler program". Proponents argue that security screening can be made more efficient by detecting those people who are threats and then searching them. They argue that searching trusted, verified individuals should not take the amount of time it does. Critics argue that such programs decrease security by providing an easier path to carry contraband through.
Another critical security measure used by several regional and international airports is that of fiber optic perimeter intrusion detection systems. These security systems allow airport security to locate and detect any intrusion on the airport perimeter, ensuring real-time, immediate intrusion notification that allows security personnel to assess the threat and track movement and engage necessary security procedures. This has notably been utilised at Dulles International Airport and U.S. Military JFPASS.
The world's first terrorist attack while in flight was Cubana Flight 455 on October 6, 1976, when the airliner flying from Barbados to Jamaica was brought down by two time bombs, killing 73 people. Evidence implicated several Central Intelligence Agency-linked anti-Castro Cuban exiles and members of the Venezuelan secret police DISIP, including Luis Posada Carriles.
The single deadliest airline catastrophe resulting from the failure of airport security to detect an onboard bomb was Air India Flight 182 in 1985, which killed 329 people.
Another notable failure was the 1994 bombing of Philippine Airlines Flight 434, which turned out to be a test run for a planned terrorist attack called Operation Bojinka. The explosion was small, killing one person, and the plane made an emergency landing. Operation Bojinka was discovered and foiled by Manila police in 1995.
On May 30, 1972, three members of the Japanese Red Army undertook a terrorist attack, popularly called the Lod Airport massacre, at the Lod Airport, now known as the Ben Gurion International Airport, in Tel Aviv. Firing indiscriminately with automatic firearms and throwing grenades, they managed to kill 24 people and injure 78 others before being neutralized (one of them through suicide). One of the three terrorists, Kozo Okamoto, survived the incident.
The Rome and Vienna airport attacks in December 1985 were two more instances of airport security failures. The attacks left 20 people dead when gunmen threw grenades and opened fire on travelers at El Al airline ticket counters.
The September 11 attacks are the most widely recognized terrorist attacks in recent times involving air travel. On the morning of September 11, 2001, 19 members of the Islamic terrorist group Al-Qaeda took control of four airplanes on the east coast of the United States and deliberately crashed two into both World Trade Center towers in New York City and the third into the Pentagon in Arlington County, Virginia. A fourth plane crashed into a field near Shanksville, Pennsylvania, not reaching Washington, D.C. for its intended target, either the U.S. Capitol or the White House. The attacks resulted in the deaths of 2,996 people, including the 245 civilians and a law enforcement officer and the 19 hijackers on board the four airplanes.
On July 5, 2002, a gunman opened fire at Los Angeles International Airport (Israel's El Al Ticket Counter). The shooter killed two people and injured four.
On August 10, 2006, security at airports in the United Kingdom, Canada, and the United States was raised significantly due to the uncovering by British authorities of a terror plot aimed at detonating liquid explosives on flights originating from these countries. This is also notable as it was the first time the U.S. Terror Alert Level ever reached "red". The incident also led to tighter restrictions on carrying liquids and gels in hand luggage in the EU, Canada, and the United States.
Airport security by country
All restrictions involving airport security are determined by Transport Canada and are enforced by the Canadian Air Transport Security Authority (CATSA). Since the September 11, 2001 attacks, as well as the Air India bombing in 1985 and other incidents, airport security has tightened in Canada in order to prevent any attacks in Canadian Airspace.
CATSA uses x-ray machines to verify the contents of all carry-ons as well as metal detectors, explosive trace detection (ETD) equipment and random physical searches of passengers at the pre-board screening points. X-ray machines, CTX machines, high-resolution x-rays and ETDs are also used to scan checked bags. All checked baggage is always x-rayed at all major commercial airports.
CATSA also completed the first phase of its Restricted Area Identity Card (RAIC) program in January 2007. This program replaces the old Airport Restricted Area Passes issued to airport employees after security checks by the Canadian Security Intelligence Service, the Royal Canadian Mounted Police (RCMP) and Transport Canada with new cards (issued after the same checks are conducted) that contain biometric information (fingerprints and iris scans) belonging to the person issued the RAIC.
The RAIC has yet to be extended to the security perimeter of Canadian airports for vehicles and persons entering from checkpoints not within airport terminals. As of September 2010 it is being tested at the Vancouver International Airport. Vehicles and personnel entering near the domestic terminals from the YVR cargo and south side must drive through the new CATSA security screening booth.
While CATSA is responsible for pre-board passenger and random non-passenger screening, they contract out to third-party "service providers" such as G4S, Securitas and GardaWorld to train, manage and employ the screening officers, GardaWorld being the largest privately owned provider of Aviation Services globally. GardaWorld operates at 28 airports within Canada, mainly under the leadership of Chantal Baril, Vice-President Aviation division. In addition, individual airport authorities which were privatized in the 1990s by the Canadian Government are responsible for general airport security rather than CATSA and normally contract out to private companies and in the case of large airports, pay for a small contingent of local police officers to remain on site as well.
Safety and security at Canada's airports are provided by local police forces. The RCMP once used to provide this service at most airports, but remains so only for a few today:
- Vancouver International Airport — RCMP Richmond detachment
- Calgary International Airport — Calgary Police Service Airport Unit (1997)
- Edmonton International Airport — RCMP Edmonton International Airport detachment
- Winnipeg James Armstrong Richardson International Airport — Winnipeg Police Service (1997)
- Toronto Pearson International Airport — Peel Regional Police Airport Division (1997) with assistance from the RCMP Toronto Airport detachment
- Ottawa Macdonald-Cartier International Airport — Ottawa Police Service Airport Policing Section (1997)
- Montréal-Pierre Elliott Trudeau International Airport — Airport Unit of the Montreal Police Service with assistance from the RCMP Airport Unit
- Halifax Stanfield International Airport — Halifax Regional Police
Regulation (EC) No 300/2008 of the European Parliament and of the Council establishes common rules in the European Union to protect civil aviation against acts of unlawful interference. The regulation's provisions apply to all airports or parts of airports located in an EU country that are not used exclusively for military purposes. The provisions also apply to all operators, including air carriers, providing services at the aforementioned airports. It also applies to all entities located inside or outside airport premises providing services to airports. The standards of regulation 300/2008 are implemented by Commission Regulation (EU) 2015/1998.
The regulation no 2320/2002 from 2002 introduced the requirement to have security checks for all passenger flights, also domestic. Some EU countries had no checks for domestic flights until around 2005 (introducing full security checks took some time since terminals might need expansion).
Passenger, luggage and freight security checking and security guard duties are outsourced to contractors. General public security is the responsibility of the Finnish Police, which has an airport unit at Helsinki Airport. The airport unit has a criminal investigation, a canine and a TEPO (terrorist and bomb) squad, and a PTR (police, customs and border guard) intelligence component. Furthermore, units of the Finnish Border Guard units at airports often arrest wanted individuals or fugitives at the border, and the Finnish Customs seizes e.g. weapons, false documents or explosives in addition to wanted individuals.
French security has been stepped up since terrorist attacks in France in 1986. In response France established the Vigipirate program. The program uses troops to reinforce local security and increases requirements in screenings and ID checks. Since 1996 security check-points have transferred from the Police Nationale/Gendarmerie de l'Air to private companies hired by the airport authorities.
As a member of the European Economic Area, Iceland has adopted EC regulation No 300/2008 into national law and thus complies with EU standards on airport security for all international flights. Domestic flights within Icelandic territory are however exempted from the security rules. The exemption was granted by the EEA Joint Committee citing the geographical remoteness of the country as well as its low population density and small size of aircraft used in domestic operations.
Airport security in the Netherlands is provided by the Koninklijke Marechaussee(KMar), Royal Military Constabulary.
Airport security in Spain is provided by police forces, as well as private security guards. The Policía Nacional provides general security as well as passport (in international airports) and documentation checking. In Catalonia and Basque Country, the Mossos d'Esquadra and the Ertzaintza, respectively, have replaced the Policía Nacional except for documentation functions. The Guardia Civil handles the security and customs checking, often aided by private security guards. Local police provide security and traffic control outside the airport building.
Airport security is handled by security guards provided by the airport itself, with police assistance if needed. Airport fire fighters are also security guards. The Swedish Transport Agency decides the rules for the check, based on international regulations. Airports are generally defined by law as "protected objects", which give guards extra authority, like demanding identity documents and search people's belongings. Sweden has traditionally seen itself as a low-crime country with little need for security checks. Sweden introduced security checks for international departures when international regulations demanded that around the 1970s/1980s. In September 2001 there was a decision to introduce security checks also for domestic flights. This took a few years to implement as domestic airports and terminals were not prepared with room for this.
The Department for Transport (DfT) is the governing authority for airport security in the United Kingdom, with the Civil Aviation Authority (CAA) also responsible for certain security regulatory functions. In September 2004, with the Home Office, DfT started an initiative called the "Multi Agency Threat and Risk Assessment" (MATRA), which was piloted at five of the United Kingdom's major airports — Heathrow, Birmingham, East Midlands Airport, Newcastle and Glasgow. Following successful trials, the scheme has now been rolled out across all 44 airports.
From January 7, 2000, travelers are no longer limited to a single piece of carry-on luggage at most of the UK's major airports Currently, hand luggage is not limited by size or weight by the DfT/CAA, although most airlines do impose their own rules.
The UK trialed a controversial new method of screening passengers to further improve airport security using backscatter X-ray machines that provide a 360-degree view of a person, as well as "see" under clothes, right down to the skin and bones. They are no longer used and were replaced by millimeter wave scanners which shows any hidden items while not showing the body of the passenger.
The Hong Kong International Airport is secured by the Hong Kong Police Force and Aviation Security Company (AVSECO). Within the police force, the Airport District is responsible for the safety and security of the airport region. Airport Security Units are deployed around the airport and are armed with H&K MP5 A3 sub-machine guns and Glock 17 pistols. The security of the restricted area is the responsibility of the police and AVSECO.
While the airport is under the control of the Airport Authority Hong Kong (AAHK), the security power has been delegated to the AVSECO staffs. All persons and baggages carried by them must be X-Rayed and checked at the security screening points of the AVSECO (with a few exceptions at the Tenant Restricted Area).
The Immigration Department will check incomers passport and other identities, while the Customs and Excise Department will check passengers and crews' luggage to discourage smuggling of drugs and contraband from entering Hong Kong.
India stepped up its airport security after the 1999 Kandahar hijacking. The Central Industrial Security Force, a paramilitary organisation, is in charge of airport security under the regulatory framework of the Bureau of Civil Aviation Security (Ministry of Civil Aviation). CISF formed an Airport Security Group to protect Indian airports. Every airport has now been given an APSU (Airport Security Unit), a trained unit to counter unlawful interference with civil aviation. Apart from the CISF, every domestic airline has a security group who looks after the aircraft security.
Terrorist threats and narcotics are the main threats in Indian airports. Another problem that some airports face is the proliferation of slums around the airport boundaries in places like Mumbai. Before boarding, additional searching of hand luggage is likely. Moreover, other than this, the CISF has many other duties in context of aviation security. The cargo security and screening is done by the Regulated Agents or airlines' and airports' own security staff who are tested and certified by the Bureau of Civil Aviation Security (BCAS), an aviation security regulator.
It was in 1972 that terrorists from the Japanese Red Army launched an attack that led to the deaths of at least 24 people at Ben Gurion. Since then, security at the airport relies on a number of fundamentals, including a heavy focus on what Raphael Ron, former director of security at Ben Gurion, terms the "human factor", which may be generalized as "the inescapable fact that terrorist attacks are carried out by people who can be found and stopped by an effective security methodology."
On December 27, 1985, terrorists simultaneously attacked El Al ticket counters at the Rome, Italy and Vienna, Austria airports using machine guns and hand grenades. Nineteen civilians were killed and many wounded. In response, Israel developed further methods to stop such massacres and drastically improved security measures around Israeli airports and even promised to provide plainclothes armed guards at each foreign airport. The last successful airline-related terrorist attack was in 1986, when a security agent found a suitcase full of explosives during the initial screening process. While the bag did not make it on board, it did injure 13 after detonating in the terminal.
As part of its focus on this so-called "human factor," Israeli security officers interrogate travelers using racial profiling, singling out those who appear to be Arab based on name or physical appearance. Additionally, all passengers, even those who do not appear to be of Arab descent, are questioned as to why they are traveling to Israel, followed by several general questions about the trip in order to search for inconsistencies. Although numerous civil rights groups have demanded an end to the profiling, Israel maintains that it is both effective and unavoidable. According to Ariel Merari, an Israeli terrorism expert, "it would be foolish not to use profiling when everyone knows that most terrorists come from certain ethnic groups. They are likely to be Muslim and young, and the potential threat justifies inconveniencing a certain ethnic group."
Passengers leaving Israel are checked against a computerized list. The computers, maintained by the Israeli Ministry of Interior, are connected to the Israeli police, FBI, Canadian Security Intelligence Service (CSIS), Scotland Yard, Shin Bet, and Interpol in order to catch suspects or others leaving the country illegally.
Despite such tight security, an incident occurred on November 17, 2002 in which a man apparently slipped through airport security at Ben Gurion Airport with a pocketknife and attempted to storm the cockpit of El Al Flight 581 en route from Tel Aviv to Istanbul, Turkey. While no injuries were reported and the attacker was subdued by guards hidden among the passengers 15 minutes before the plane landed safely in Turkey, authorities did shut down Ben Gurion for some time after the attack to reassess the security situation and an investigation was opened to determine how the man, an Israeli Arab, managed to smuggle the knife past the airport security.
At a conference in May 2008, the United States Department of Homeland Security Secretary Michael Chertoff told Reuters interviewers that the United States will seek to adopt some of the Israeli security measures at domestic airports. He left his post in January 2009, a mere 6 months after this statement, which may or may not have been enough time to implement them.
On a more limited focus, American airports have been turning to the Israeli government and Israeli-run firms to help upgrade security in the post-9/11 world. Israeli officials toured Los Angeles Airport in November 2008 to re-evaluate the airport after making security upgrade recommendations in 2006. Calling Ben Gurion "the world's safest airport," Antonio Villaraigosa, mayor of Los Angeles, has implemented the Israeli review in order to bring state-of-the-art technology and other tactical measures to help secure LAX, considered to be the state's primary terrorist target and singled out by the Al Qaeda network. New Age Security Solutions, led by the former director of security at Ben Gurion and based in Washington, D.C., consults on aviation security at Boston's Logan International Airport.
Other U.S. airports to incorporate Israeli tactics and systems include Port of Oakland and the San Diego County Regional Airport Authority. "The Israelis are legendary for their security, and this is an opportunity to see firsthand what they do, how they do it and, as importantly, the theory behind it," said Steven Grossman, director of aviation at the Port of Oakland. He was so impressed with a briefing presented by the Israelis that he suggested a trip to Israel to the U.S. branch of Airports Council International in order to gain a deeper understanding of the methods employed by Israeli airport security and law enforcement.
Security for the country's two international passenger airports comes under the purview of the Airport Police Division of the Singapore Police Force, although resources are concentrated at Singapore Changi Airport where scheduled passenger traffic dominate. Seletar Airport, which specializes in handling non-scheduled and training flights, is seen as posing less of a security issue. Since the September 11, 2001 attacks, and the naming of Changi Airport as a terrorism target by the Jemaah Islamiyah, the airport's security has been stepped up.
Roving patrol teams of two soldiers and a police officer armed with automatic weapons patrol the terminals at random. Departing passengers are checked at the entrance of the gate rather than after immigration clearance unlike Hong Kong International Airport. This security measure is easily noticed by the presence of X-ray machines and metal detectors at every gate, which is not normally seen at other airports.
Assisting the state organizations, are the security services provided by the ground handlers, namely that of the Certis CISCO, Singapore Airport Terminal Services's SATS Security Services, and the Aetos Security Management Private Limited, formed from a merger of the Changi International Airport Services's airport security unit and that of other companies to become a single island-wide auxiliary police company. These officers' duties include screening luggage and controlling movement into restricted areas.
Since 2005, an upgrade in screening technology and rising security concerns led to all luggage-screening processes being conducted behind closed doors. Plans are also in place to install over 400 cameras to monitor the airport, to discourage bomb attacks similar to the 2005 Songkhla bombings in Southern Thailand where Hat Yai International Airport was targeted. Tenders to incorporate such a system were called in late September 2005.
Since 8 May 2007, the liquid restrictions of 100 ml cap is enforced, following the 2006 transatlantic aircraft plot. Passengers are advised to check in liquids, gels and aerosols above 100 ml, failing which they will be confiscated by airport security and have to post it back to oneself. Anything that is in the security areas is allowed. In general practice, unacceptable materials are also confiscated and have to post it back to yourself (excluding nail clippers, nail files, umbrellas and racquets).
|List of unacceptable items||Lifetime prohibited items (cabin/checked in)|
Prior to the 1970s American airports had minimal security arrangements to prevent acts of terrorism. Measures were introduced starting in the late 1960s after several high-profile hijackings.
Sky marshals were introduced in 1970, but there were insufficient numbers to protect every flight and hijackings continued to take place. On November 10, 1972 a trio of hijackers threatened to fly Southern Airways Flight 49 into a nuclear reactor at Oak Ridge National Laboratory. As a direct response to this incident, the Federal Aviation Administration required that all airlines begin screening passengers and their carry-on baggage by January 5, 1973. This screening was generally contracted to private security companies. Private companies would bid on these contracts. The airline that had operational control of the departure concourse controlled by a given checkpoint would hold that contract. Although an airline would control the operation of a checkpoint, oversight authority was held by the FAA. C.F.R. Title 14 restrictions did not permit a relevant airport authority to exercise any oversight over checkpoint operations. The 1974 film, The Parallax View, shows an early airport security checkpoint in operation.
The September 11 attacks prompted even tougher regulations, such as limiting the number of and types of items passengers could carry on board aircraft and requiring increased screening for passengers who fail to present a government-issued photo ID.
The Aviation and Transportation Security Act generally required that by November 19, 2002 all passenger screening must be conducted by Federal employees. As a result, passenger and baggage screening is now provided by the Transportation Security Administration (TSA), part of the Department of Homeland Security. Provisions to improve the technology for detecting explosives were included in the Terrorism Prevention Act of 2004. Often, security at category X airports, the U.S. largest and busiest as measured by volume of passenger traffic, are provided by private contractors. Because of the high volume of passenger traffic, category X airports are considered vulnerable targets for terrorism.
With the increase in security screening, some airports saw long queues for security checks. To alleviate this, airports created Premium lines for passengers traveling in First or Business Class, or those who were elite members of a particular airline's Frequent Flyer program.
United States incidents
- On February 27, 2006, at the Will Rogers World Airport in Oklahoma City, in an airliner cargo area (accessible only to authorized personnel), threatening graffiti was found.
- On March 6, 2006 at John F. Kennedy International Airport in New York, an elderly man drove his car onto the runway through two security gates. He made it to an active runway where an Air France aircraft was preparing to land. The man drove around for approximately 23 minutes before being stopped. On the same day a man made it on to the runway by running through a secure gate while it was being opened at Midway International Airport in Chicago. The man made it through one of the three perimeter entrances that did not have a camera, resulting in four different runways being closed down. This incident led to 222 aviation security officers being retrained and a redesign of all perimeter gates.
- On March 11, 2006, after four years of continuous security breaches and staffing problems news reports indicated that federal officials removed the head of security at Newark Liberty International Airport.
- On November 1, 2013, a gunman named Paul Anthony Ciancia, age 23, shot and killed TSA agent Gerardo I. Hernandez at the Terminal 3 security checkpoint in Los Angeles International Airport. Ciancia then shot two other civilians as he passed security. He made it to the food court in the back of the terminal where federal agents tracked him down and shot him. He was then transported to a trauma hospital where he was treated for his injuries and was released by the end of November to law enforcement. The incident called for a complete shut down in the passenger drop off/departure roadways on the upper level of the airport and caused hundred of flight cancellations across the nation, although international flights had no cancellations. Terminals one, two, and three were shut down and so were the nearby runways, 24L and 24R. Flights that were already in the air and were preparing to land at these runways were either directed to land at the south runways or to divert to Ontario International Airport or Long Beach Airport.
Category X Airports in the United States
- Baltimore/Washington International Thurgood Marshall Airport
- Boston Logan International Airport
- Charlotte/Douglas International Airport
- Cincinnati/Northern Kentucky International Airport
- Dallas/Fort Worth International Airport
- Denver International Airport
- Detroit Metropolitan Wayne County Airport
- George Bush Intercontinental Airport
- Hartsfield–Jackson Atlanta International Airport
- Honolulu International Airport
- Las Vegas McCarran International Airport
- Los Angeles International Airport
- Luis Munoz Marin International Airport
- John F. Kennedy International Airport
- Miami International Airport
- Minneapolis-Saint Paul International Airport
- Newark Liberty International Airport
- O'Hare International Airport
- Orlando International Airport
- Orlando Sanford International Airport
- Philadelphia International Airport
- Phoenix Sky Harbor International Airport
- San Francisco International Airport
- Seattle–Tacoma International Airport
- Washington Dulles International Airport
- Computer Assisted Passenger Prescreening System
- Registered Traveler
- Airport racial profiling in the United States
- Secondary Security Screening Selection
- Secure Flight
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