Thule Air Base is the U.S. Armed Forces' northernmost installation, located 750 miles north of the Arctic Circle. Thule's arctic environment offers some of the most spectacular scenery found anywhere in the World, including majestic icebergs in the North Star Bay, the massive polar ice cap, and Wolstenholme Fjord — the only place on earth where three active glaciers join together.
Thule Air Base is home to the 21st Space Wing's global network of sensors providing missile warning, space surveillance and space control to North American Aerospace Defense Command and Air Force Space Command. Thule became an Air Force Space Command base in 1982. Today Thule is still a military base, home to the 821st Air Base Group, which exercises Air Base support responsibilities within the Thule Defense Area.