Lockdown readiness saves lives

Members of the 87th Security Forces Squadron apprehend airmen posing as shooters during an active-shooter exercise June 2, 2011, at Griffith Field House. The exercise tests the joint base’s ability to respond to an active shooter event, similar to the attack at Fort Hood, Texas, when a gunman opened fire in 2009. (U.S. Air Force Photo by Jack D. Neith/Released)