Shortly after the launch of a satellite from a space shuttle the satellite collides with an UFO in front of the crew's eyes. Because of an election campaign some politicians try to hide the... See full summary »



(screenplay) (as Steven Thornley), (story) (as Tom Chapman) | 1 more credit »

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Cast overview, first billed only:
Frank Morrison
Sarah Michaels
Steven Keats ...
Paul Bannister
Harry Forbes
Sheriff Barlow
Flight Director


Shortly after the launch of a satellite from a space shuttle the satellite collides with an UFO in front of the crew's eyes. Because of an election campaign some politicians try to hide the crashed UFO -- inside hangar 18. Written by Kay Drangmeister <>

Plot Summary | Add Synopsis


Why won't they tell us? See more »


PG | See all certifications »

Parents Guide:





Release Date:

13 March 1981 (Ireland)  »

Also Known As:

Invasion Force  »

Filming Locations:


Box Office


$11,000,000 (estimated)


$6,000,000 (USA)

Company Credits

Production Co:

Show detailed on  »

Technical Specs


Sound Mix:



Aspect Ratio:

1.85 : 1
See  »

Did You Know?


According to Wikipedia, the picture "was released to capitalize on the UFO interest of the era. The film itself carries ties to Area 51, as well as ufology. Although it flopped (reportedly earning a gross of only $6 million), it tantalized those who saw government cover-ups of UFOs (such as the Roswell incident)". See more »


The space shuttle orbiter, while in space, has the standard nose of the NASA's orbiters that went to space, but the landing footage shows a needle sticking out from the tip of the nose. This needle was present only on the Enterprise orbiter, which never went to space, revealing that the landing footage is NASA atmospheric test footage. See more »


Steve Bancroft: Old buddy, the brakes are gone!
See more »


Referenced in 51 (2011) See more »

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User Reviews

should you watch this?
2 August 2009 | by (United States) – See all my reviews

Well if your reading this your either bored, deciding on whether or not to watch it or just trying to get some perspective. So lemme' clear the air.

First off, this is a sci-fi movie in the way the smith/goldbloom blockbuster "independance day" is. In other words its not a sci-fi movie but more of a fantasy action drama. You could even consider it a kind of cop chase movie crammed with ample techno-psycho babble. But I don't think those genres are quite fitting. I personally deem it a sorta pulpy/campy flick and possibly a soon to be cult classic. That said, don't compare it to "independence day". Think more along the lines of kubrik's "dr. strange love or how i..." Who will like this movie? Well studied and open minded ufo nerds, people who laugh at things that ain't meant to be funny, film students and of course stoners. Who will hate it? People who read the book first, people who like any vin deisel movie or magnolia, film critics and of course stoners. Whats the straight dope? Its very well shot, but its pock marked with terrible and often confusing dialog. It has constant trouble pacing the scenes but the action bits seem way too cool. As a pluss the actors give a serious tour deforce and make sure to keep an eye out for Charlton Heston. By far, the most grooved out aspect is wondering how much of todays media was inspired by this movie.

The best- an astronaut spontaneously stealing a car. The worst- the first 10 minutes. The line to know- "Airplanes crash every day."

12 of 19 people found this review helpful.  Was this review helpful to you?

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