Senior Airman Zachary Burris, 2nd Security Forces Squadron installation patrolman, left, and Tech. Sgt. Jacob Udell, 2nd SFS flight sergeant, clear a building of threats during an active shooter exercise at Barksdale Air Force Base, Louisiana, Sept. 16, 2021. The 2nd SFS Airmen are the first to respond to an active shooter and they're tasked with neutralizing the threat and protecting base personnel. (U.S. Air Force photo by Airman 1st Class Jonathan E. Ramos)

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Photo by: Airman 1st Class Jonathan Ramos |  VIRIN: 210916-F-RZ678-1037.JPG