Airmen from the 2nd Security Forces Squadron, discuss

Airmen from the 2nd Security Forces Squadron, discuss tactics for clearing a building during an active shooter training exercise at Barksdale Air Force Base, La., July 18, 2016. The squadron conducted the training in teams of two, rather than their usual four-person teams, because a typical team responding to a real-world situation consists of two Airmen. (U.S. Air Force photo/Senior Airman Curt Beach)