CAVITY CONVERSATION

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04/20/2012 05:13 PM CDT

U.S. Army Maj. Murray Reefer, left, explains how he will fill a cavity to U.S. Army Sgt. Preston Yates on Forward Operating Base Arian in Afghanistan's Ghazni province, April 17, 2012. Reefer, a dentist, and Yates, a supply clerk, are assigned to the 82nd Airborne Division's 1st Brigade Combat Team.