By Eddie Wrenn
Agents held the 12-man team at gunpoint for three hours while checking their credentials
This is the moment a BBC film crew were held by security teams at the notoriously secretive Area 51 - where aliens allegedly crashed their saucer in the 1947 Roswell incident.
Irish comedian Andrew Maxwell and UFO expert Darren Perks sneaked past the border at the site - and were forced to lie on the ground at gunpoint for three hours while the FBI checked their credentials.
It is the same 'documentary' team that caused outrage in Britain last week when they suggested that the 7/7 London bombings were part of a government conspiracy to boost support for the Iraq war.
The 'UFO: Conspiracy Road Trip' documentary, airing next Monday, will show how the BBC film crew were arrested at gunpoint.
They were forced to lie on the ground for three hours as guards surrounded them armed with M16 assault rifles.
The crew, 12 people in total, were investigating Area 51 in Nevada - where the U.S. military allegedly hold the bodies of aliens and the remnants of ships which crashed in 1947.
As they crossed the border, military officers arrested them, confiscating their phones, wallets and identification.
Warnings: Signs make clear the dangers of trying to reach Area 51
He said the crew were fined £375 each and 'ordered not to reveal what they saw' - but Darren admitted: 'We didn’t see anything except a bit of tarmac.'
The rest of the programme shows sceptic Andrew Maxwell speaking to people across the U.S. about aliens on a journey which encompasses Hollywood and the Nevada desert.