Darth Vile said:
I?d go further and speculate that the scenes at Roswell (if that is indeed where the warehouse scene is) involves more than just the actual warehouse...
It seemingly does. That fight with the big brute in the bunker area seems to be part of Area 51. If it's not Area 51, it's certainly some other high-tech setting.
Now, I don't think there's
any way this sequence closes the film. Shia, Karen Allen, and John Hurt don't appear to be around (and we know from John Hurt that he's int he finale and returns with the rest of the big five, which are only visible together in the temple sequences, indicating that the temple closes the film). Furthermore, most reliable reports put the pyramid stuff at the finale.
Furthermore, the silhouetted Indy shot seems dead certain to be the introduction, not the finale. It would be awkward if it appeared later in the film (what's the point in hiding Indy's face?).
Darth Vile said:
I mean if you are going to incorporate Area 51 into a movie, you really have to go with the idea that we'll see... A) An alien space craft under wraps.
Not if the craft was pretty much wrecked in the crash, and only things salvaged remain.