i saw this movie while in college in 1975. i laugh until i cry . i be in pain . i roll on the floor in agony . you actually get to see photograph of invisible fly critter . plan 9 from out space and robot monster have good production value when compare to this movie . the narrator talk about a 4 engine bomber that encounter a ufo but the film show a 2 engined c 47 military transport . the saucer be tin pie plate dangle from fish line attach to fish pole . the guy who make this have a lot of fun . see it with friend a this heighten the effect of the absurdity and create a bootstrap laugh situation . however you must be careful if food or drink be make part of the experience since choking and projectile fluid could be a problem . someone should check out credential of who make this movie . be their a sinister motive like cia disinformation or just an attempt to slay the audience with peal of laughter . wonder if it come in under budget . do it have a budget . a classic of it kind .