Master Sgt. Paul Allen, 173rd Fighter Wing structural maintenance technician, points out a point-of-failure on a mold cast from dental plaster, rather than wood, which the structural maintenance team used to shape a fairing rib on an F-15C at Kingsley Field in Klamath Falls, Ore., Nov. 5, 2021. The maintainers found using a hammer to form the metal around the mold immediately cracked it. (U.S. Air National Guard photo by Master Sgt. Jefferson Thompson)

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Photo by: Master Sgt. Jefferson Thompson |  VIRIN: 211105-Z-NJ935-0001.JPG