Shooting Drills Marines perform shooting drills with their M16A4 service rifles during a squadron field exercise at the Yuma Proving Ground in Yuma, Ariz., March 9, 2016. Marine Corps photo by Pfc. George Melendez SHARE IMAGE: Download Image: Full Size (0.79 MB) Photo By: Pfc. George Melendez VIRIN: 160310-M-VR252-243A.JPG Photo Gallery