We're 41 blocks away!
Update: Just heard that one building collapsed. People trapped.
Another Update: Maybe not a collapse?
Side Note: The company my husband works for recently bought Falk Corp.
More: A caller on the radio say he was driving by there at the time, and the blast pushed his truck over a lane. There's a live shot on www.cnn.com. They're now reporting at least 30 injuries.