Modern Marines Marines use their tablets to synchronize time and grid coordinates for their next objective during a heavy-Huey raid as part of Weapons and Tactics Instructors course 2-17 at Yuma Proving Grounds, Ariz., April 12, 2017. Air Force photo by Tech. Sgt. Chris Hibben SHARE: Download: Full Size (1.65 MB) Tags: marines, air assault, urban operations, training, marine corps Credit: Tech. Sgt. Chris Hibben VIRIN: 170412-F-PS957-0013A.JPG Photo Gallery