Mortar Exercise Marines prepare to fire a mortar at Hijudai Maneuver Area, Japan, Dec. 9, 2018, during Forest Light 19.1, an exercise designed to enhance U.S and Japanese collective defense capabilities. SHARE: Download: Full Size (1.61 MB) Tags: Marine Corps Credit: Marine Corps Lance Cpl. Christine Phelps VIRIN: 181209-M-BP396-063C.JPG Photo Gallery