Spc. Tanner Ketterling, 6th Squadron, 1st Cavalry Regiment, assembles a M4 carbine during the weapons familiarization portion of the 2016 Iron Scout competition here March 15.

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 19d, 2016, bliss, competition, discipulus, fort, iron, navigation, scout, validus