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A Airman attending the Engineering Installation vehicle training class, rigs a synthetic sling to a maintenance hole cover Dec. 13, 2017, at the Air National Guard Schoolhouse, Fort Indiantown Gap, Pennsylvania. Airmen utilized rigging techniques they learned in class to maneuver maintenance holes for underground installation. ( Air National Guard
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Photo credit: © Image Vault / Alamy / Afripics
License: Licensed
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