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Navy Capt. Christopher J. Cobb, from Poughkeepsie, N.Y., the Combat Dentistry Detachment officer in charge with Alpha Surgical Company, 2nd Marine Logistics Group (Forward), conducts a wisdom tooth extraction on Lance Cpl. Eduardo A. Barrera, from Los Banos, Calif., a motor transportation operator with 3rd Battalion, 4th Marine Regiment, 2nd Marine Division (Fwd.), May 30, 2011, aboard Camp Leatherneck, Afghanistan. - Navy Capt. Christopher J. Cobb, from Poughkeepsie, N.Y., the Combat Dentistry Detachment officer in charge with Alpha Surgical Company, 2nd Marine Logistics Group (Forward), conducts a wisdom tooth extraction on Lance Cpl. Eduardo A. Barrera, from Los Banos, Calif., a motor transportation operator with 3rd Battalion, 4th Marine Regiment, 2nd Marine Division (Fwd.), May 30, 2011, aboard Camp Leatherneck, Afghanistan.