People gather around a display featuring the Grypmat, a flexible, non-slip tool tray for aircraft mechanics, Nov. 12, 2017 at Rev1 Ventures in Columbus, Ohio. The Grypmat was invented by Tech. Sgt. Tom Burden, an F-16 weapons mechanic assigned to the 180th Fighter Wing, Ohio Air National Guard. ( Air National Guard photo by Staff Sgt. Shane Hughes)

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Photo credit: © Archistoric / Alamy / Afripics
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