U.S. Air Force Master Sgt. Stephen Grubbs, a member

U.S. Air Force Master Sgt. Stephen Grubbs, a member of the 116th Security Forces Squadron (SFS), Georgia Air National Guard, fires an M240 machine gun as Staff Sgt. Alan Glaze acts as his spotter during a training exercise at the Catoosa Training Site, Tunnel Hill, Ga., June 26, 2014. The 116th SFS is the security arm of the 116th Air Control Wing based at Robins Air Force Base, Ga. The squadron deployed to the Catoosa Training Site for annual training where they received extensive classroom and hands-on training to hone their skills on various firearms such as the M4 carbine, M203 grenade launcher and M240 and M249 machine guns. (U.S. Air National Guard photo by Master Sgt. Roger Parsons/Released)