Airmen from the 802nd Security Forces Squadron clear an area of the Air Force Basic Military Training reception center during an active shooter training exercise Aug. 31. The training exercise tested Lackland units on their ability to respond to an active shooter incident. (U.S. Air Force photo/Robbin Cresswell)

An Airman from the 802nd Security Forces Squadron clears an area of the Air Force Basic Military Training reception center during an active shooter training exercise Aug. 31. The training exercise tested Lackland units on their ability to respond to an active shooter incident. (U.S. Air Force photo/Robbin Cresswell)

Emergency responders carry a patient into Wilford Hall Medical Center for treatment during an active shooter training exercise Aug. 31. The training exercise tested Lackland units on their ability to respond to an active shooter incident. (U.S. Air Force photo/Robbin Cresswell)