According to the Pentagon, two soldiers assigned to the Aberdeen Proving Ground have been killed in Afghanistan. Twenty-five-year-old Staff Sgt. Chauncy Mays of Cookville, Texas, and 22-year-old Spc. Christopher Stark of Monett, Mo., died Monday in Wardak province when enemy forces attacked their unit with an improvised explosive device. They were assigned to the 63rd Explosive Ordnance Disposal Battalion, 20th Support Command, Aberdeen Proving Ground.