Complex sentence: NASA agents, led by Dr. Louis Faraday (Howard Hesseman), confiscate it, explaining to police that it is their experimental spacelab, and bring it to their own hangar, but is impregnable from the outside.
Split into simpler sentences: NASA agents, led by Dr. Louis Faraday (Howard Hesseman), confiscate it, explaining to police that it is their experimental spacelab. They bring it to their own hangar, but is impregnable from the outside.