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Measure twice, cut once
Tools that were requested for manufacturing are laid out on a bench in the metals technology shop at Joint Base Langley-Eustis, Va., Aug. 22, 2017. Metal technicians have little to no room for error when performing their job, since a mistake as small as a third of the diameter of a human hair could cost a pilot or aircrew member their life. (U.S. Air Force photo by Senior Airman Derek Seifert)