Was reading a book which described aliens with knees that bent backwards (like an ostrich) and I remembered a scene from a movie and wanted to identify it.
Its probably from the 90s. I believe aliens are infiltrating Earth and either trying to set up terraforming stations to convert the earth to be more to their liking, or setting up a communication device. (Pretty sure it was terraforming)
I am NOT talking about either of "V" or "Them"
The Protagonist is more or less alone (no one believes him when he tells them what is going on) trying to sabotage their plans, while they are trying to kill him. [Using his intelligence to stop them as opposed to picking up guns ever 10 minutes and killing them all]
The scene I remember: At the end of the movie, they are fighting in a radio telescope tower. Similar to this.
The some of the aliens chasing him deploy an implosion grenade in the control room under the tower that creates a mini black hole effect that over 30 seconds gradually sucks everything nearby into it, destroying the building and dropping the dish down on to it. (The aliens dying in the collapse)
The protagonist has survived, and a 15(?) year old African-American neighbor who had been doing minor errands for him/asking "whats he doing", and was with him at the radio tower, turns out to have been an alien who has been spying on him. He then twists his legs around so his knees are backwards and runs off at 40mph.
In an earlier scene I remember the aliens had deployed one of the implosion grenades in the protagonist's house to suck up all the info/maps/charts he had collected on their activities so he had no evidence. (pretty sure it stripped the house bare, furniture and all.)
