Marine Fighter Training Squadron 401 (VMFT-401) is a United States Marine Corps Reserve fighter squadron flying the F-5N Tiger II. Known as the “Snipers”, the squadron is the only adversary squadron in the Marine Corps. They are based at Marine Corps Air Station Yuma and fall under the command of the 4th Marine Aircraft Wing and Marine Aircraft Group 41.
The majority of VMFT-401’s annual workload is their work-up and participation in the semiannual Weapons and Tactics Instructor (WTI) course conducted by Marine Aviation Weapons and Tactics Squadron One (MAWTS-1) at MCAS Yuma, Arizona. They provide adversary work in Offensive Anti-Air Warfare and Anti Air Warfare exercises during this training evolution. They also help train new Marine F/A-18 Hornet pilots that are assigned to VMFAT-101 at Marine Corps Air Station Miramar.