Staff Sgt. Austin Jost, 128th Security Forces Squardon journeyman, Milwaukee, Wisconsin, and Air National Guard Defender’s Challenge team member, runs to his final portion of the combat arms component of the Air Force Defender’s Challenge 2018 at Camp Bullis in San Antonio, Texas, Sept. 11, 2018. Running between station was required to help stress the Airmen and raise their heart rates which simulates many combat and first responder situations. (Air National Guard

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Photo credit: © Bob Collet / Alamy / Afripics
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Keywords: 2018, air, america, archive, armed, army, challenge, competition, defence, defenders, force, forces, guard, guardsmen, military, national, navy, reportage, security, service, serviceman, servicemen, soldier, states, united, usa