Marine Muscle Marine Corps Sgt. Joshua Morris executes a Romanian deadlift during a High Intensity Tactical Training Level 1 instructor course at the gym on Marine Corps Air Station Yuma, Ariz., Oct. 28, 2015. Morris is an air traffic controller with Marine Air Control Squadron 1. U.S. Marine Corps photo by Pvt. George Melendez SHARE: Download: Full Size (1.33 MB) Credit: Pvt. George Melendez VIRIN: 151028-D-HV319-713.JPG Photo Gallery