Jacob Zeman, artillery repairer makes adjustments to the BOLTS test bench he designed and built at Production Plant Barstow, aboard Marine Corps Logistics Base Barstow, Calif, April 25. By design the M777 scavenge manifold and cylinder was engineered to allow a small amount of weeping, but this test bench allows for testing and repair to ensure optimal functioning.

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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Keywords: barstow, bolts, brown, howitzer, m777, mclb, mdmc, ppb, zeman