What happened
On March 16, 1967, at the Echo Flight launch control facility of Malmstrom Air Force Base in Montana, ten Minuteman I intercontinental ballistic missiles went into “no-go” status in quick succession and could not have been launched. The military and the missiles’ manufacturer, Boeing, carried out a detailed investigation. Years later, former officer Robert Salas began claiming that he had experienced a similar event on March 24 at the Oscar Flight facility, when guards reported a red, glowing object over the gate. Researcher Robert Hastings collected accounts by former servicemen of UFOs over nuclear bases in his books. The story resurfaced in 2010 at a press conference held by former military personnel in Washington.
Witnesses
The crews of the Echo and Oscar Flight launch control facilities, including Lieutenant Robert Salas; topside guards whose names have not been made public.
Explanations and hypotheses
Documents from the investigation indicate that the Echo Flight failure was caused by an electrical noise pulse in the safety control system, and the official reports make no mention of UFOs. Skeptics, including James Carlson, whose father was a commander at Echo, argue that the story of a light over the silos only emerged in the 1990s. Proponents point to ambiguities in the files and the consistency of some witnesses’ accounts.
Disputed A likely explanation exists, but some of the facts are still disputed.
More: Wikipedia (en)