|Air Test and Evaluation Squadron 31|
|Branch||United States Navy|
|Garrison/HQ||Naval Air Weapons Station China Lake|
Air Test and Evaluation Squadron 31 (VX-31 or AIRTEVRON THREE ONE, commonly referred to by its nickname, The Dust Devils) is a United States Navy air test and evaluation squadron based at Naval Air Weapons Station China Lake, California. Using the tail code DD, they fly numerous United States Navy and United States Marine Corps fixed-wing aircraft and helicopters.