'Transformers 3' Set Turns Chicago Into a Battleground

Toto, we're definitely not in Illinois anymore! Shia LaBeouf, Josh Duhamel, Tyrese Gibson and the rest of the cast and crew of Transformers 3 turned Chicago into a battleground full of exploding machinery, gunfire and all the pyrotechnics and special effects that make a great action movie worth its weight in admission prices!

OK! GALLERY: JOSH & TYRESE "TRANSFORM" BACK INTO ACTION STARS

These guys have been working hard dodging bullets, running, jumping and being generally awesome during this round of filming in the Windy City.

OK! GALLERY: SHIA LABEOUF ROLLING WITH HIS CO-STARS

While we've seen Shia making friends with his newest leading lady, Rosie Huntington-Whiteley, we haven't gotten to witness him doing any hardcore stunts yet. Good luck, Shia!