For a long time after first watching this back in '85, I thought Def Con 4 stood for the most extreme alert, just before nuclear war. In reality, it's just one number below normal; Def Con 1 is the bad one. So, this is kind of mess-up before it even begins. It's a strange story structure for this low budget effort: it begins with these astronauts in outer space; when they do crash to Earth (after a nuclear war has occurred), I expected them to have adventures as a group, but survivability for the expected main guy is low. Also, it seems like many years have gone by by the time they arrive on Earth, though I thought the war happened only a little while before their arrival. Get ready for early scenes of cannabalism. BoG's Score: 3 out of 10.