U.S. Marines Capt. Alex Hoppman, platoon commander, with 2nd Battalion, 14th Marine regiment, 4th Marine Division, reads documents during ARCTIC EDGE 2025 (AE25) at Donnely Training Area, Alaska, Aug. 22, 2025. Specialized Arctic training generates valuable lessons learned for warfighters and enablers ensuring they can execute their assigned missions in any environment. AE25 is a NORAD and U.S. Northern Command-led homeland defense exercise designed to improve readiness, demonstrate capabilities and enhance Joint and Allied Force interoperability in the Arctic. (U.S. Marine Corps Photo by Lance Cpl. Edward Spears.)