Senior Airman Garren Holcomb, 316th Security Forces Squadron patrolman, clears a practice round out of a M203 grenade launcher at Marine Corps Base Quantico, July 15, 2010. Members qualifying fire 15 practice rounds that emit an orange smoke so that the 316th SFS combat arms instructors can assist in getting a more accurate aim. (U.S. Air Force photo by Senior Airman Melissa V. Brownstein)