Two U.S. Air Force personnel pose outside Building I-79 at Thule Air Base, Greenland, beneath a sign identifying Detachment #1 of the 59th Fighter-Interceptor Squadron. Taken during the early-to-mid 1950s, this slide documents the harsh Arctic environment and improvised infrastructure -- including an elevated pipeline to protect utilities from permafrost -- that characterized Cold War air-defense outposts in the far north. Project: 218295