Cpl. Dustin K. Davis, right, uses his spotter, Cpl.

Cpl. Dustin K. Davis, right, uses his spotter, Cpl. Rafael A. Dehoyos, to stabilize his M40A5 sniper rifle Aug. 17 at the Central Training Area in Okinawa, Japan. Marines sometimes use natural or inanimate objects to stabilize their rifles when the prone position is not an option. The M40A5 rifle is a bolt-action sniper rifle with a muzzle velocity of 2,550 feet per second and an effective firing range of up to 900 meters. Both Marines are reconnaissance men with 3rd Reconnaissance Battalion, 3rd Marine Division, III Marine Expeditionary Force. (U.S. Marine Corps photo by Pfc. Cedric R. Haller II/Released)