From left, U.S. Air Force Senior Airman Jomalier Viera-Martinez, 39th Security Forces Squadron response force leader, and U.S. Air Force Staff Sgt. Ryan Santiago, 39th SFS unit training instructor, run to the next obstacle during an obstacle course in preparation for the 2018 Defender’s Challenge at Incirlik Air Base, Turkey, July 30, 2018. Both Viera-Martinez and Santiago were chosen to compete for a spot on the 2018 United States Air Forces in Europe-Air Forces Africa’s Defender Challenge team after scoring at the top of all 39th SFS Airmen. (U.S. Air Force photo by Staff Sgt. Kimberly Nagle)

PHOTO BY: Staff Sgt. Kimberly Nagle
VIRIN: 180730-F-XR514-1029.JPG
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