This is a great example of 1950's sci-fi movies and the flying saucer scare craze that was sweeping the nation and of course parallels the cold war threat and the resilience and ingenuity of American science and military might. Retired Major Donald E. Keyhoe was the author of a series of non-fiction books of the era outlining his belief in the reality of flying saucers and this film draws from his book Flying Saucers From Outer Space. Veteran monster movie writer Curt Siodmak adapted a story based on the book for this film and veteran monster movie screenwriter George Worthing Yates wrote the screenplay. Special effects legend Ray Harryhausen supervised the effects and Josh Westmoreland, a sound veteran of westerns and monster movies, provided the sound. B-movie director Fred F. Sears and B-movie cinematographer Fred Jackman Jr. put it all together on the screen. In what would be a foreboding of things to come on 9/11 American monuments are under attack and destroyed. Aliens from a dying planet come to earth to claim it as their own but earth fights back. Hugh Marlow and Joan Taylor star. It's campy but it's still a good flick and a good representative of it's era and genre and I would give it an 8.0 out of 10.