Lance Cpl. Christian Christopoulos (back) and Cpl. Tyler Stampes fire an M110 semi-automatic sniper system in an improvised firing position during marksmanship/observer training at Range 22 Jan. 6, 2015. The Marines are with Special Reaction Team, Camp Foster Provost Marshal's Office, Marine Corps Installations Pacific - Marine Corps Base Camp Butler. Christopoulos is a Parker, Colo., native and Stampes is a Bakersfield, Calif., native. SRT is the military equivalent of Special Weapons and Tactics teams. (U.S. Marine Corps photo by Sgt. Matthew Callaha)