Then-Lt. Col. Darren Jump, left, counsel for environmental and land use with the Office of Counsel for the Commandant, walks alongside a desk being moved into an office in the E Ring at the Pentagon in Arlington, Virginia, in an undated photo from 2002. Jump was one of the first Marines who returned to offices in the E Ring after that part of the Pentagon was renovated following the attacks on 9/11. - Then-Lt. Col. Darren Jump, left, counsel for environmental and land use with the Office of Counsel for the Commandant, walks alongside a desk being moved into an office in the E Ring at the Pentagon in Arlington, Virginia, in an undated photo from 2002. Jump was one of the first Marines who returned to offices in the E Ring after that part of the Pentagon was renovated following the attacks on 9/11.