SGT. George Hargrove of Btry. B, 1ST Bn., 37th Field Arty., uses an M-1 infinity aiming reference collimator to set deflections on an M-101 105mm howitzer during a live fire exercise. Base: Fort Richardson State: Alaska (AK) Country: United States Of America (USA)
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Photo credit: © NB/ROD / Alamy / Afripics
License: Licensed
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