Sappers treck California hills at night
A U.S. Army Reserve Combat Engineer Soldiers from the 374th Engineer Company (Sapper), headquartered in Concord, Calif., navigates through a night land navigation at 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). Original public domain image from Flickr