Maj. James Ross, 422nd Test and Evaluation Squadron air battle manager, demonstrates proper arm motion during a 2015 U.S. Air Force Trials swimming team practice session at Nellis Air Force Base, Nev., Feb. 27, 2015. Ross and more than 200 members of Nellis and Creech AFBs volunteered to help out during the trials, which will run Feb. 27 to March 5. (U.S. Air Force photo by Staff Sgt. Siuta B. Ika)
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