SFS performs routine maintenance on weapons Published April 6, 2016 By Senior Airman Amanda Morris 2nd Bomb Wing Public Affairs BARKSDALE AIR FORCE BASE, La. -- Airman First Class Miguel Pichardo, 2nd Security Forces Squadron gate guard, inspects M4 carbine after finishing a routine cleaning at Barksdale Air Force Base, La., April 1. After reassembly, performing an inspection and function check is important to ensure everything is in proper working condition. (U.S. Air Force photo/Senior Airman Amanda Morris)