A Minuteman launch control facility at Malmstrom AFB in the 1960s, the kind of site that ran Echo Flight U.S. Air Force photo, Public domain, via Wikimedia Commons
All ten Minuteman missiles of Malmstrom's Echo Flight went offline within about half a minute, an event recorded in declassified unit histories. Former launch officer Robert Salas and others later said guards reported glowing objects at the time; their decades-later accounts are disputed.