MASTER SGT. Arvel Jackson instructs 1ST LT. Vance Zider on the use of a tripod-mounted mortar sight to ensure the position and alignment of an 81mm mortar and its base plate during heavy weapons training at Rodriquez Range. Jackson is a Pacific Air Force 3rd Security Police Squadron heavy weapons superintendent and Zider, a 51st Security Police Squadron member. Base: Rodriquez Range Country: South Korea

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Photo credit: © NB/ROD / Alamy / Afripics
License: Licensed
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