200127-M-ZM399-1012 HOKKAIDO, Japan (Jan. 27, 2020) U.S. Navy Lt. Cmdr. Aaron Bernadette demonstrates the application of a ventilation mask during exercise Northern Viper on Yausubetsu Training Area, Hokkaido, Japan, Jan. 27, 2020. Personnel currently assigned to the Logistics Command Element for exercise Northern Viper train in austere environments to prepare units for all weather conditions. Northern Viper is a regularly scheduled training exercise that is designed to enhance the interoperability of the U.S. and Japan Alliance by allowing Marine Air-Ground Task Forces from III Marine Expeditionary Force to maintain their lethality and proficiency in MAGTF Combined Arms Operations in cold weather environments. (U.S. Marine Corps photo by Lance Cpl. Terry Wong/Released)