Second Lt. Corey Hayes, 28th Force Support Squadron readiness officer in charge (left), Capt. Benjamin Quintanilla, 28th Bomb Wing chaplain (center), and Senior Airman Lucile Perkinswagle, 28th FSS fitness center journeyman (right), perform pushups as a part of a ruck march at Ellsworth Air Force Base, S.D., Sept. 18, 2015. Approximately 10 Airmen participated in the challenge aimed at encouraging unit cohesion and critical thinking. (U.S. Air Force photo by Airman Sadie Colbert/Released)
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