Cool Concealment Marines participate in a simulated assault at Yausubetsu Training Area in Hokkaido, Japan, Feb. 7, 2020, during Northern Viper, a regularly scheduled training exercise designed to enhance the collective defense capabilities of U.S. and Japanese forces. SHARE IMAGE: Download Image: Full Size (0.81 MB) Tags: Marine Corps, Training Photo By: Marine Corps Lance Cpl. Jackson Dukes VIRIN: 200207-M-JD525-014C.JPG Photo Gallery