Qualla: Calumet Air Force Station: Cold War Eyes on the Keweenaw

Calumet Air Force Station: Cold War Eyes on the Keweenaw: Introduction

Mon, 23 Feb 2026 00:00:00 GMT

The story that saved Calumet Air Force Station -- at least temporarily -- is almost too good to check. Sometime around 1979, when the station was slated for closure and its height-finder radar was being removed, Calumet allegedly became the only station in the network to detect a simulated air incursion. The closure was reversed. Whether apocryphal or not, the tale captures something essential about this remote radar installation on Michigan's Keweenaw Peninsula: perched at the edge of the continent, scanning vast stretches of empty sky over Lake Superior, Calumet AFS saw things other stations missed. For nearly four decades, the 665th Radar Squadron operated from this hilltop east of Phoenix, Michigan, part of America's continental air defense network during the Cold War.

Calumet Air Force Station: Cold War Eyes on the Keweenaw: The Korean Catalyst

Mon, 23 Feb 2026 00:00:00 GMT

Calumet owed its existence to the Korean War. When fighting broke out in Korea in 1950, the vulnerability of American airspace to Soviet long-range bombers became an urgent concern. On July 11, 1950, the Secretary of the Air Force asked the Secretary of Defense for approval to ex...

Calumet Air Force Station: Cold War Eyes on the Keweenaw: Guiding Interceptors Through Empty Skies

Mon, 23 Feb 2026 00:00:00 GMT

Calumet initially functioned as a Ground-Control Intercept and warning station. The squadron's primary mission was to guide interceptor aircraft toward unidentified targets detected on their radar scopes -- a critical role given that the Keweenaw Peninsula juts far into Lake Supe...

Calumet Air Force Station: Cold War Eyes on the Keweenaw: Decades of Quiet Vigilance

Mon, 23 Feb 2026 00:00:00 GMT

The 665th Radar Squadron was redesignated multiple times as the Air Force reorganized its defense structure. It passed through assignment to the 30th Air Division, the 37th Air Division, the Sault Sainte Marie Air Defense Sector, the Duluth Air Defense Sector, and eventually the ...

Calumet Air Force Station: Cold War Eyes on the Keweenaw: After the Radars Went Dark

Mon, 23 Feb 2026 00:00:00 GMT

Following closure, the station was reconfigured as a Joint Surveillance System site operated by the Federal Aviation Administration, cycling through additional radar systems including the AN/FPS-27, AN/FPS-91A, and AN/FPS-116. Ownership of the broader facility transferred to Kewe...