Adak Adm. Andrew Lewis air force Air Warfare alaska Aleutian islands allies anti-submarine warfare arctic Arctic Strategy atlantic China Defense Secretary Jim Mattis E2-D Hawkeye f-22 GIUK Iceland Joint Base Elmendorf-Richardson Naval Air Station Keflavik Naval Warfare navy Navy Secretary Norway P-8 Poseidon Pacific Richard V. Spencer Russia SASC SASC seapower subcommittee Sen. Dan Sullivan Senate Armed Services Committee south korea Threats Trident Juncture 2018 Tyndall Air Base USS Harry S. Truman

acquisition air force Air Warfare allies anti-submarine warfare arms exports asia ASW Boeing China E2-D Hawkeye fms foreign military sales intelligence surveillance and reconnaissance ISR Japan Japanese Self-Defense Force missile defense multi-domain Multi-Domain Command & Control Naval Warfare navy North Korea Northrop Grumman P-8 Poseidon Pacific Patriot pentagon Russia south korea State Department submarines