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A Marine demonstrates the TRX Overhead Squat as part of the Force Fitness Instructor (FFI) Course aboard Marine Corps Base Quantico, Va. March 8, 2017. The video will aide FFIs in teaching proper technique to Marines at their units. (U.S. Marine Corps video by Cpl. Amber Jennings/released)
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USMCexercisequanticooverheadTRXSquatUSMCTCOM#USMCTECOMFORCEFITNESS
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