Members of the 23d Security Forces Squadron detain the simulated active shooter, U.S. Air Force Staff Sgt. Christopher Childress, 23d SFS military working dog trainer, during an active shooter exercise, Dec. 8, 2016, at Moody Air Force Base, Ga. The 23d SFS initially responded to the emergency and after securing the scene paramedics and firefighters assisted with simulated injured and deceased people. (U.S. Air Force photo by Airman 1st Class Daniel Snider)