When released on VHS cassette in 1988, the front cover of the box depicts an actor and actress looking up into the sky. These actors are NOT the actors in the film.
Also, the starship Enterprise-D from Star Trek: The Next Generation is seen in the upper right-hand corner of the picture, supposedly representing the spaceship used by the "aliens" who are attacking Earth. As no point during the film are any Star Trek spacecraft seen.
In fact, the aliens and their ship(s) are never shown in the film, and their attack is only mentioned by characters in the film.
Filmed in 1972.