A lithium ion camera battery exploded in a suitcase before security at the Orlando airport Friday evening. Some passengers reported that it sounded like a gun shot, however it appears to have been an accident and not an attack of any kind.
The TSA ordered that all passengers who had cleared security had to evacuate the terminal and be re-screened. And all passengers that were onboard planes that had not yet taken off returned to their gates to get off, leave the terminal, and be re-screened.