General Dynamics C4 Systems

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General Dynamics C4 Systems
Industry Defense and Aerospace
Founded 1999
Headquarters Scottsdale, AZ, United States
Area served
Key people
Chris Marzilli (President)
Number of employees
Parent General Dynamics
Slogan "Strength On Your Side"

General Dynamics C4 Systems is a business unit of American defense and aerospace company General Dynamics. General Dynamics C4 Systems is a leading integrator of secure communication and information systems and technology. General Dynamics C4 Systems has core manufacturing in secure communications networks; radios and satellite technology for the military, public safety, and scientific communities.


General Dynamics C4 Systems was originally owned by GTE and operated as GTE Government Systems. General Dynamics acquired GTE Government Systems in 1999.[1]

  • NOTE: This history needs investigation & update to show General Dynamics' purchase of the Motorola Integrated Information Systems Group (IISG) in 2001 as the General Dynamics Decision Systems business unit and the later merger with GDC4S.


  • TACLANE - Network encryption device developed with the NSA
  • Sectera - Portable secure voice and data device developed for the NSA
  • CoMotion
  • ModIOS - Defense Information System Simulation Management tool for Windows and UNIX®. As one of the most comprehensive exercise management software packages commercially available, ModIOS provides the network interface to simulation, exercise control functions, 2D and 3D views, recording and playback of simulated exercises, voice communications and after action review debriefs/reports.
  • S2Focus - Commercial-Off-The-Shelf (COTS) software tool suite that provides the critical infrastructure necessary to conduct distributed simulations and training. Key capabilities include data recording, data analysis, data filtering and control, data visualization, mission planning, learning content management, and user progress tracking.


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