UFOs have been 'disabling nuclear warheads' and interfering with military training, according to two US Air Force veterans who spoke out at a recent hearing.

The astonishing accounts were given at the All-domain Anomaly Resolution Office - or AARO - which is probing alleged UFO sightings near military bases, as the Daily Star reports.

Former US Air Force intercontinental ballistic missile launch officer Robert Salas has testified he was on duty at Malmstrom air force base in Montana on March 24, 1967, when an orange disc-shaped UFO briefly hovered over the front gate.

Seconds after security reported the sighting to Salas all 10 of the missiles at the base dropped offline one after the other and the nukes were "un-launchable", and "it took several hours to repair and retarget them".

Though a probe was launched by the military and reports were compiled, no explanation was ever found for the missiles' shutdown.

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