Shooter, explosives test Team Hill Airmen
Staff Sgt. Richard Leslie, 75th Security Forces Squadron, responds to a report of an active shooter and explosives during a response exercise at building 732, Hill Air Force Base, April 24. (U.S. Air Force/Paul Holcomb)

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Photo by: Paul Holcomb |  VIRIN: 170424-F-QT350-0004.JPG