The aliens made contact with 3 peaceful human beings. Their true evilness and purpose showed. They destroyed the humans and deployed their space, war machines. The alien technology is so supieror to our own that all over the world military forces have been defeated again and again. However Dr Forrest captured a sample of alien DNA. The humans have uncovered their weakness. Which is they are vulnerable to our bacteria and certain chemicals. However the U.S. military launche a nuclear warhead which did not affect the aliens. So Dr forrest idea was put to use and was called CHEMICAL X!! It destroyed the aliens and forced them to surrender and the aliens were banished from ever coming to Earth again.