Senior Airman Edward Black, 434th Civil Engineer Squadron pavements and construction equipment apprentice, washes the cement off a trowel Aug 8, 2013 at Grissom Air Reserve Base, Ind. Black and other CES members spent 12 days training here and expanded the patio between the 434th Maintenance Group command section and the base exchange at Bldg. 595. (U.S. Air Force photo/Tech. Sgt. Doug Hays)
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