Marines with 1st Light Armored Reconnaissance Battalion, 1st Marine Division, dig a hole in the sand to form an observation post during Steel Knight 17 at Marine Corps Air-Ground Combat Center Twentynine Palms, Calif., Dec. 7, 2016. Steel Knight is an annual exercise led by 1st Marine Division that spans the western United States and the California coast. An observation post is a position set up to observe enemy movements from a hidden area and report them back to the main unit.

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Size: 1732px × 1155px
Photo credit: © Conner Flecks / Alamy / Afripics
License: Licensed
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