U.S. Air Force Senior Airman Jomalier Viera-Martinez, 39th Security Forces Squadron response force leader, performs pull-ups during an obstacle course in preparation for the 2018 Defender’s Challenge at Incirlik Air Base, Turkey, July 30, 2018. Viera-Martinez, is one of the two individuals that were chosen from the 39th SFS to compete for a spot on the 2018 United States Air Forces in Europe-Air Forces Africa’s Defender Challenge team. (U.S. Air Force photo by Staff Sgt. Kimberly Nagle)
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