Walking the mat

Then-Sgt. Danyell (Wilson) Walters takes her watch as a sentinel at the Tomb of the Unknown Soldier at Arlington National Cemetery in 1997. Walters, now a sergeant major and senior enlisted adviser for U.S. Army Medical Logistics Command, is one of just four women to serve as a tomb guard with the prestigious 3rd U.S. Infantry Regiment, known as "The Old Guard." (U.S. Army photo courtesy Sgt. Maj. Danyell Walters)