If the authorities believed there was any chance this is a terrorist gig, they would shut down the cell net as a precaution.
Thanks! I think the cell phones were shut down. First game I have attended in years that no one got a call after the blast, and instant messages with just the score did not get out. All of a sudden in the 4th quarter all of our cell phones went off that we had messages. They all went off at the same time too. That's when the lady behind us received the call from her sister-in-law who had been trying to get in touch with her.