Staff Sgt. William Mack, 91st Security Support Squadron tactical response force member, tries to distract Senior Airman Arthur Moody, 91st Missile Security Forces member while he puts together an M4 rifle at Minot Air Force Base, , Oct. 29. TRF tryout

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Staff Sgt. William Mack, 91st Security Support Squadron tactical response force member, tries to distract Senior Airman Arthur Moody, 91st Missile Security Forces member while he puts together an M4 rifle at Minot Air Force Base, , Oct. 29. TRF tryout process can last anywhere from six to eight hours.

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Photo credit: © MixPix / Alamy / Afripics
License: Licensed
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