A combat controller assigned to the 22nd Special Tactics Squadron at Joint Base Lewis-McChord, Wash., practices free fall techniques in the iFly wind tunnel in Seattle, March 25, 2015. In an effort to increase their stability and safety while in a free fall, Special Tactics combat controllers, in several different groups, conducted 60 minutes of wind tunnel training. (U.S. Air Force photo/Master Sgt. Todd Wivell)
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