ANDERSEN AIR FORCE BASE, Guam - Staff Sgt. Derrick Spencer, 36th Wing Public Affairs NCO-in-charge of broadcasting, fires a replica M4 Carbine automatic rifle at a simulated target at the Warrior Skills Trainer here Nov. 19. The $4 million simulator supports several weapon platforms compatible with the simulator, including the M4 Carbine automatic rifle, the MK19 grenade launcher, the M249 Squad Automatic Weapon and the M2 Browning heavy machine gun. (U.S. Air Force photo by Senior Airman Shane Dunaway)