The Handoff Coast Guardsmen assigned to Port Security Unit 311 and Marines assigned to 3rd Battalion, 4th Marines, 1st Marine Division, conduct a simulated port seizure during Exercise Arctic Edge 2025 at Port Mackenzie, Alaska, Aug. 13, 2025. The U.S. Northern Command-led exercise demonstrates joint force readiness in extremely cold weather as well as the military's commitment to strategic security interests in the Arctic region. SHARE: Download: Full Size (1.37 MB) Tags: arctic edge, exercises, coast guard, northern command, training, marine corps, arctic edge 25 Credit: Air Force Staff Sgt. Jonathan McElderry VIRIN: 250813-F-IY281-1303K.JPG Photo Gallery