UFO hunter Steven Barone, who regularly monitors the Nellis Air Force Base in Las Vegas, uploaded the footage to YouTube to make the extraordinary claims.
He claims the footage shows alien UFOs above the restricted air base at night.
Mr Barone says it was only obtained because he used specialist night vision recording equipment.
In a promotional blurb for the video, he wrote: “I shot this video from my backyard in the Summerlin area of Las Vegas, Nevada, on the night of November 15, 2016.
“I am not enhancing it in any way so this is exactly as it was as it came from the night vision camera.”
He claims to regularly see and record UFOs over the Las Vegas Valley, which he believes come from the test and training range of the air base and nearby top-secret Area 51 in Nevada.
Scott C Waring, editor of ufosightingsdaily.com, said: “These objects are flying over a USAF base in that area so no one can travel over there to take a look. It is all fenced in high security area.”
He went one step further and claimed they were testing technology recovery from actual alien visitors to Earth – something that has ben withheld from the public.
He added: “It looks like the USAF is testing some of the alien craft that was given to the USAF in good faith.”
Mr Waring is known for his great speculation on UFO video and pictures, without having any apparent evidence to back up his wild claims.
A long-standing alien conspiracy theory claims that a species of aliens knows as the “Tall Whites” are actually based inside Nellis Air Force Base where they help the USAF develop their technologies in exchange for mineral resources they require on their planet.
There is no known evidence to support this theory other than it being repeated on various conspiracy theory websites.
Express.co.uk has contacted the US Air Force at the base for comment.