355th Security Forces Squadron active shooter training exercise
A Senior Airman from the 355th Security Forces Squadron dons his protective head gear as he prepares to begin active shooter training on Davis-Monthan Air Force Base, Ariz., Feb. 9. Instead of blanks, simunitions were used for the training, which requires protection when used. (U.S. Air Force photo by Airman 1st Class Michael Washburn/Released)