Air Support Marines load a 2.75 inch rocket during Weapons and Tactics Instructors Course 1-18 at Chocolate Mountain Aerial Gunnery Range, Calif., Oct. 3, 2017. Marine Corps photo by Lance Cpl. Brennon A. Taylor SHARE: Download: Full Size (0.52 MB) Tags: Marines, training, Marine Corps Credit: Lance Cpl. Brennon Taylor VIRIN: 171003-M-TF447-0169.JPG Photo Gallery