U.S. Army Reserve combat engineer Soldiers from the 374th Engineer Company (Sapper), headquartered in Concord, Calif., performed a helicopter casting into Lopez Lake, Calif., during a two-week field exercise known as a Sapper Leader Course Prerequisite Training at Camp San Luis Obispo Military Installation, Calif. The unit is grading its Soldiers on various events 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)