The six former officers, and one other enlisted man, will break their decades-long silence on the matter at a press conference in Washington on Monday.
The men are expected to describe the ongoing and disturbing intervention of UFOs at nuclear weapon sites, including examples of how several missiles inexplicably malfunctioned while unidentified disc-shaped object hovered nearby.
Robert Hastings, the author of 'UFOs and Nukes: Extraordinary Encounters at Nuclear Weapons Sites', will host the press conference tomorrow when he will present the evidence and the other veterans who back his claims.
In a statement he declared: 'At long last, all of these witnesses are coming forward to say that, as unbelievable as it may seem to some, UFOs have long monitored and sometimes tampered with our nukes.'
ICBM launch officer Captain Robert Salas, who will also be present on Monday, claims to have witnessed a UFO incident in 1967 which caused a missile disruption at the Malmstrom Air Base in Montana.
He, like the others, claims he was ordered to keep quiet about it.
'The Air Force is lying about the national security implications of unidentified aerial objects at nuclear bases, and we can prove it,' he said.
Mr Hastings says the group will discuss the national security implications of the UFOs incidents and will urge U.S. government to come clean on the issue.
The UK government have also been accused of covering up the subject, with claims that 30 years ago a UFO directed beams of light into the RAF Bentwaters base in Suffolk - one of the few U.S. military bases in Britain to hold nuclear weapons.
The base's deputy commander Charles Halt will join the group on Monday to discuss the incident.
'The security services of both the United States and the United Kingdom have attempted, both then and now, to subvert the significance of what occurred at RAF Bentwaters by the use of well-practiced methods of disinformation.' he told the Sunday Express.
The men are planning on distributing declassified U.S. government documents at the press conference that they claim will prove the reality of UFO activity at nuclear sites dating back to 1948.
In 2001, the Disclosure Project - a non
Watch a video of the 2001 press conference below: