MENTORING U.S. Army Staff Sgt. Aaron Shepherd instructs Iraqi soldiers on proper checkpoint procedures on Forward Operating Base Hawk, Iraq on Sep. 18, 2008. Shepherd is assigned to the 4th Infantry Division's, 4th Squadron, 10th Cavalry Regiment. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 993116-B-HOY05-615.jpg Photo Gallery