Talk about burning bridges!
Sara started the letter off as a sort of breakup with the company saying:
[Image via People.]
Wowsa! Looks like SOMETHING intense happened here!
Check out the leaked footage from The Dark Knight Rises set in Los Angeles (above), which seems to show the aftermath of a tunnel explosion.
Take a close look, and you'll see that it's actually a prop wall tunnel. We must admit, we almost didn't realize that the first time we saw this!