ARLINGTON, Va. (AP) -- In the middle of the night, troops from the Army's ceremonial unit known as the Old Guard are taking pictures of all the hundreds of thousands of grave markers at Arlington National Cemetery.
The photographs are part of the cemetery's efforts to update and fully digitize its maps.
Last year, the Army's inspector general revealed that there were unmarked and mismarked graves in the cemetery considered the nation's most hallowed ground. New managers were brought in to clear up the problems, and there is an ongoing criminal investigation stemming from allegations of mismanagement.
Old Guard troops usually wear dress blues and white gloves. But for this mission, they wear head lamps and T-shirts. They do their work at night to escape the summer heat and to avoid interrupting a funeral.