Marines conduct a notional raid on a Polaris MRZR 4 vehicle during exercise Northern Edge....photo by Cpl. Rhita Daniel

FORT GREELY, Alaska (May 22, 2019) - U.S. Marine Corps Staff Sgt. Juan Morales, front right, a platoon sergeant, with 2nd Battalion, 7th Marines, Special Purpose Marine Air Ground Task Force 7, conducts a notional raid on a Polaris MRZR 4 vehicle during exercise Northern Edge (NE), May 22, 2019 at Fort Greely, Alaska. Approximately 10,000 U.S. military personnel participate in exercise NE 2019, a joint training exercise hosted by U.S. Pacific Air Forces that prepares joint forces to respond to crises in the Indo-Pacific region.