Army Spc. Nico Sedita, a combat engineer with Sapper Company, 6th Brigade Engineer Battalion, left, and Marine Cpl. Johnico Dennison, a combat engineer with 8th Engineer Support Battalion, 2nd Marine Logistics Group, detonates explosives placed into the ice of a frozen lake at Marine Corps Mountain Warfare Training Center (MCMWTC), Bridgeport, California, Feb. 7, 2023. As part of the Winter Mountain Engineer Course, students learned how to use demolition to create holes in iced over lakes and trigger avalanches. ( Marine Corps photo by Cpl. Andrew Bray)

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Photo credit: © APFootage / Alamy / Afripics
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Keywords: cord, det, explosion, ice, mwtc, usmc