3+2+1= Check 6
U.S. Air Force Master Sgt. Joseph Reyes, 455th Expeditionary Security Forces Squadron intel anti-terrorism representative and alternate Check 6 program manager, helps an Airmen clear out a weapon before starting hands on Check 6 weapons retention May 25, 2015, at Bagram Air Field, Afghanistan. Check 6 is an active shooter/insider threat awareness program that teaches Airmen how to react and respond with their weapons in the event that a hostile situation occurs at the base. (U.S. Air Force photo by Senior Airman Cierra Presentado/Released)