A soldier covers a sector of fire after off-loading from a CH-47 Chinook helicopter as he participate in an air assault landing during a sapper leader course on Camp San Luis Obispo Military Installation, Calif., July 18, 2015. The soldiers are reservists assigned to the 374th Engineer Company. The unit is grading its soldiers on various events to determine who will earn a spot on a "merit list" to attend a sapper leader course on Fort Leonard Wood, Mo.