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U.S. Air Force Staff Sgt. Michael Hidalgo, a heavy equipment and constructions journeyman with the 379th Expeditionary Civil Engineer Squadron Pavements and Equipment Flight, smooths out wet concrete at Al Udeid Air Base, Qatar, Feb. 21, 2017. Using a bull float tool, Costa brought the concrete “sludge” to the top, allowing for the concrete to have a smooth finish. (U.S. Air Force photo by Senior Airman Miles Wilson)
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