Master Sgt. Mathew Quinlan, 124th Security Forces Squadron flight chief, Boise, Idaho, and Air National Guard Defender’s Challenge team member, talks with an Air Force Defender’s Challenge 2018 prior to the start of his leg of the combat arms component of the challenge at Camp Bullis in San Antonio, Texas, Sept. 11, 2018. Participants were allowed to ask basic questions prior to the start of the component. (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