challenge. even once the computer system is back up and functional the backlog and effect will take probably all day to work out. >> talk to me -- just astounding to see all those planes halted grounded there at chicago olair. how about those united planes that need to land at this point? how will they go about in dealing with those planes? >> they should -- those planes normally. if you were an inbound plane into chicago o'hare and you'll see, some planes are on the ramp and they're moving. i can't tell you if they just arrived or teaking into position, but if your plane is in the hair ledded for a destination, it should be able to proceed to that destination unless of course there's an on-board emergency. >> how about the back osteohere when it comes to what peeble be behind this, with the merger