U.S. Marine Corps Sgt. Duane A. Ammeter, a drill instructor

U.S. Marine Corps Sgt. Duane A. Ammeter, a drill instructor from 2nd Battalion at Marine Corps Recruit Depot San Diego, instructs Marine Corps Recruiting Substation Chandler enlistees to maintain their bodies in the push-up position during a physical training exercise at the Arrowhead Meadows Park in Chandler, Ariz., Jan. 23, 2013. Ammeter, a native of Pueblo, Colo., emphasized that the enlistees always give their maximum effort. The enlistees are currently part of the delayed entry program and are awaiting their dates to ship to boot camp. The drill instructors are visiting the Phoenix region through Jan. 26 to provide enlistees and potential applicants a first-hand preview of what they may be able to expect once they step onto the yellow footprints. (Official U.S. Marine Corps photo by Cpl. Tyler J. Bolken)