Gen. John W. “Jay” Raymond, Chief of Space Operations, recorded a shout-out on the Polar Playbook radio show with U.S. Air Force Tech. Sgt. Leanthony Bosserman, 821st Support Squadron at Thule Air Base, Greenland, Nov. 22, 2021. Thule AB is the northernmost installation of the U.S. Department of Defense, located 750 miles north of the Arctic Circle.