mass disaster category which put 18 medic units in service automatically which activated some others. we moved a lot of personnel onto the scene in rapid order and most of those personnel are still on the scene as the investigation continues. we're anticipating the ntsb to be here in philadelphia. they have been activated and we need cranes and other equipment that's also been activated, waiting for them. they cannot move the cars until ntsb is on the scene because they will ultimately take over. >> right. when you were talking about the fire department having to cut people out of the mangled wreckage, did they need to be cut out because they were trapped and they were transported to the hospital? were these people who were just trapped because they simply had no other way to get out? are these the most critical or