Soldiers on a military post in Vietnam, December 20, 1969. The photograph shows them working with surveying instruments and weapons sights. They are operating an Integrated Observation system AN/Guo/10. The photo was taken by LCpl Pearson, a Marine Corps photographer, and is a Defense Department photo.

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Size: 3328px × 2109px
Photo credit: © piemags/NBV / Alamy / Afripics
License: Licensed
Model Released: No

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