5th SFS Defenders train for GS challenge
Senior Airman Dustin Fowler, 5th Security Forces Squadron, runs during a ruck at Minot Air Force Base, N.D., March 16, 2017. The ruck was one of the many requirements for the Global Strike Challenge tryouts for the 5 SFS. (U.S. Air Force photo/Senior Airman Kristoffer Kaubisch)

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Photo by: Senior Airman Kristoffer Kaubisch  |  VIRIN: 170316-F-QP249-0173.JPG