Tech. Sgt. Chad Byall, 81st Security Forces investigations NCO in charge, attempts to negotiate with the “bad guy” during an active shooter exercise at the Larcher Chapel Sept. 21, 2017, on Keesler Air Force Base, Mississippi. An active duty Air Force member simulated opening fire at the Arnold Medical Annex and the Larcher Chapel in order to test the base's ability to respond to and recover from a mass casualty event.

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Keywords: 81st, active, aetc, air, america, archive, armed, army, base, defence, exercise, force, forces, keesler, military, navy, reportage, response, service, serviceman, servicemen, shooter, soldier, states, training, united, usa, wing