Members of the 87th Security Forces Squadron apprehend the shooters during the active shooter exercise June 2, 2011, at Griffith Field House on Joint Base McGuire-Dix-Lakehurst, N.J. 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/Jack D. Neith)