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SSgt. Jason Penny, 66th Security Forces Squadron unit training scheduler, secures a StressVest belt at Hanscom Air Force Base, Mass., Dec. 22. StressVest kits include body panel vests, belts, hats, and weapon-mounted lasers, provide immediate feedback to the user via a light shock or vibration to simulate real-time engagement during trainings. (U.S. Air Force photo by Lauren Russell)
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