In the very last scene Veronica Cartwright's character is happy to see the hero, played by Donald Sutherland, only for him to emit the alien scream, demonstrating that despite their best efforts they were unable to stop the alien force.
Veronica Cartwright's character is happy to see the hero. This is in the very last scene. The hero is played by Donald Sutherland. Him to emit the alien scream. They were unable to stop the alien force. This was despite their best efforts. The hero is demonstrating this.