Cpl. Brock O'Shaughnessy and Cpl. James Farran, U.S.

Cpl. Brock O'Shaughnessy and Cpl. James Farran, U.S. Army Reserve Combat Engineer Soldiers with the 374th Engineer Company (Sapper), headquartered in Concord, Calif., walk along a range road during a night land navigation course through the hills and mountains of Camp San Luis Obispo Military Installation, Calif., July 15, during a two-week field exercise known as a Sapper Leader Course Prerequisite Training. The unit is grading its Soldiers on each event to determine which ones will earn a spot on a "merit list" to attend the Sapper Leader Course at Fort Leonard Wood, Mo. (U.S. Army photo by Master Sgt. Michel Sauret)