Aliens have landed, infiltrated British nuclear missile sites and deactivated the weapons, according to US military pilots.
The beings have repeated their efforts in the US and have been active since 1948, the men said, and accused the respective governments of trying to keep the information secret.
The unlikely claims were compiled by six former US airmen and another member of the military who interviewed or researched the evidence of 120 ex-military personnel.
The information they have collected suggests that aliens could have landed on Earth as recently as seven years ago.
The men’s aim is to press the two governments to recognise the long-standing extra-terrestrial visits as fact.