Senior Airman Collin Kirkpatrick, 628th Security Forces Squadron patrolman, lines up ammunition cans during a weapons familiarization and proficiency training course March 14, 2013, at Fort Jackson, S.C. The 628th SFS performed the training for M240B proficiency while on patrol boats on the Cooper River and surrounding waterways. (U.S. Air Force photo/Senior Airman George Goslin)