An instructor from the El Salvador Special Forces Anti-Terrorist Special Command, left, watches over as U.S. Army SGT. 1ST Class Joshua Carswell, 1ST Battalion, 325th Airborne Infantry Regiment, 82nd Airborne Division, Ft. Bragg, N.C., fires an FNC assault rifle, the Belgian version of the US M4 assault rifle, at a target during a stress shoot course during a Small Unit Familiarization Program platoon exchange in San Salvador, El Salvador on May 3, 2006. (U.S. Army photo by Kaye Richey) (Released)