An Air Force Special Tactics operator mans a M2 .50 cal heavy machine gun mounted in the cupola of a GMV-S (Ground Mobility Vehicle) during a training exercise with other Special Tactics personnel at Melrose Air Force Range, 2012.
The GMV family of vehicles are variants of the HMMWV that have been modified for use by Special Operations Forces.
The GMV-S is the variant in use by Air Force Special Operations Command (AFSOC).
Special Tactics operator are a mix of Combat Controllers, TACPs, Pararescuemen and Combat Weathermen who carry out a range of operations, often embedded into Army and Navy special mission units.