The Malmstrom Missile Shutdown Incident
March 1967 Malmstrom Air Force Base missile field, Montana, United States

The short version
On 16 March 1967, all ten Minuteman nuclear missiles at Echo Flight, part of Malmstrom Air Force Base in Montana, suddenly went offline. Air Force investigators traced the shutdown to an electrical fault. Decades later, former missile officer Robert Salas said he saw missiles fail at a different flight while guards reported a glowing red object overhead, but documents confirming that second event have not been found.
1What happened
On the morning of 16 March 1967, the ten Minuteman I intercontinental ballistic missiles controlled from the Echo Flight launch control centre, part of the 341st Strategic Missile Wing at Malmstrom Air Force Base, went into a no-go condition almost simultaneously. That meant none of them could have been launched until repaired. The event was serious and prompted an immediate investigation.
The Echo Flight shutdown is well documented in Air Force records, including the wing’s unit history. At the time, it was treated as a technical problem. There was no mention of UFO reports in connection with the failures in the investigation’s conclusions, apart from a note dismissing rumours of UFOs in the area.
Years later, UFO researchers linked Malmstrom to a different story. Robert Salas, who had served as a missile launch officer there, said that in March 1967 missiles at his launch control centre also shut down, just as security guards on the surface reported a red glowing object hovering near the gate. Salas first associated his account with Echo Flight, but later said it happened at Oscar Flight, a different launch control centre.
2The evidence
For Echo Flight, the evidence is documentary: unit histories, messages and the results of the technical investigation, some of which were later released under the Freedom of Information Act. These establish that ten missiles went offline at once and that engineers searched extensively for the cause.
For the Oscar Flight account, the evidence is mainly the testimony of Salas and of a small number of other former personnel, given decades after 1967. Salas described the events in a book written with researcher James Klotz and has spoken about them publicly, including at a 2010 press conference in Washington with other former military personnel. Other former personnel have offered accounts that support or contradict parts of his story, and none of them was recorded at the time.
No contemporary record of a missile shutdown at Oscar Flight has been published. Researchers who support the story argue that such records may have been classified or not released. Sceptics argue that without documents, the Oscar account cannot be separated from memory confusion with the well-documented Echo incident.
3The official explanation
The Air Force and its contractor, Boeing, investigated the Echo Flight shutdown. Their work concluded that the most likely cause was an electrical pulse or noise reaching the missiles’ guidance and control systems through a component called the logic coupler. They were able to reproduce similar failures by injecting noise in tests. Modifications were made across the missile fleet afterwards.
The unit history recorded that rumours of UFOs in the area during the failures were investigated and found to be unfounded. The Air Force has not acknowledged any shutdown at Oscar Flight and has consistently stated that there is no evidence of UFO involvement in the 1967 events.
4Alternative explanations
Salas and researchers such as Robert Hastings, author of UFOs and Nukes, argue that UFOs have repeatedly appeared near nuclear weapons sites and that Malmstrom is part of that pattern. They point to reports of UFO sightings over Montana in early 1967 and to testimony from former personnel. They consider the electrical fault explanation incomplete and suggest it was used to avoid a more troubling truth.
Sceptics note that the dramatic version depends on merging two stories: a well-documented technical failure at Echo Flight with a later, undocumented account set at Oscar Flight. They argue that memories recalled decades after the fact are particularly vulnerable to blending when a real, related incident exists, and that the shifting of Salas’s account from one flight to another illustrates the problem. Supporters reply that the correction reflects honest effort to get the details right.
5What remains unexplained
The Echo Flight shutdown is documented and has a technical explanation that the engineers supported through testing. Whether that explanation accounts for exactly what triggered the failure on that morning is less certain, but no evidence ties it to an unidentified object.
The open question is the Oscar Flight account. Robert Salas has told his story consistently for many years and has not been shown to be wrong, but it has not been confirmed by records either. The Malmstrom case is disputed because it combines a real and serious event with testimony that cannot yet be checked against documents.
Sources
- Faded Giant — BookSurge (Robert Salas and James Klotz), 2005
- UFOs and Nukes: Extraordinary Encounters at Nuclear Weapons Sites — AuthorHouse (Robert Hastings), 2008
- 341st Strategic Missile Wing unit history and Echo Flight investigation records (released under FOIA) — U.S. Air Force
This article has been compiled from the sources listed but has not yet been independently checked against them. If you spot an error, tell us. Contact


