outside of terminals where attention would be getting dropped occupy. this is an area where taxicab drivers would be sitting and waiting? is that correct? >> they stage there, and sometimes they wait up to an hour. there's a cafe that serves taxi drivers. they sit and wait their turn to be the next one in the queue. it's not a play where travelers are going, so less likely to be a place where looking for an attack, this wouldn't be -- it looks like make a mechanical failure or human error or medical event and the cap proceeded forward into the area where they often sit and gather and have coffee preparing for the next route. hopefully that's what it is and it's tragic, obviously, our amazing ems in boston will do their work to get the best