Army Cpl. Brock O'Shaughnessy and Cpl. James Farran orient themselves on a map during a night navigation course through the hills and mountains of Camp San Luis Obispo Military Installation, Calif., July 15, 2015. O'Shaughnessy and Farran are reserve combat engineers assigned to the 374th Engineer Company, which is grading its soldiers to determine who will earn a spot on a "merit list" to attend a sapper leader course on Fort Leonard Wood, Mo.