U.S. Marine Corps photo by CEO 5-16/Released 160502-M-ZZ999-124.JPG
May 2, 2016
On April 26, 2016 Second Lieutenant Thomas Cofer (Left) and First Lieutenant Jonathan Lanning Keller (Right), Marines attached to Combat Engineer Officer course 5-16 (CEO 5-16); load a 9.5 cubic feet concrete mixer with sand. Students are trained how to use locally sourced materials to make their own concrete mix.
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