U.S. Marines Sgt. David W. Leach, left, a shop chief, and Sgt. Dennis B. Velasco, a maintenance chief, both with Marine Wing Support Squadron 372 perform maintenance on a AMK-970 tanker at Camp Bastion, Helmand province, Afghanistan, Oct. 14, 2013. Leach and Velasco were responsible for identifying, trouble shooting and keeping the unit's equipment within good standards. (U.S. Marine Corps photo by Sgt. Gabriela Garcia/Released)
Sgt. Gabriela Garcia
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