evan1975 said:
I'm not even completely sure if Engineers = Space Jockey. The Space Jockey looked like it was 20 feet tall and the Engineer looked half that, at most.
I've read some fan theories out there which run with that idea. One is that the Engineers are emissaries of the Space Jockeys or something like that, and that their Space Jockeyesque suits are some form of bioengineered outfit that allows them to interface with Jockey technology.