replenish meant. jon: the valujet crash. >> the valujet crash indeed. they can have problems in the hold that do spread to the care aircraft. that would problem think give the pilot time to do something. doesn't really explain the chain of events of the technology being turned off. jon: right it doesn't explain, if there were a cockpit fire, the crew might have started flipping circuit breakers, trying to turn off equipment, trying to find out and isolate the source of the problem but that doesn't explain if there was some massive electrical failure in this 777 which has so many redundant systems, it doesn't explain how the plane might have been able to fly on seven or eight hours on autopilot which is electric i driven. >> some pilots put in emergency landing location when they get on the plane f there is something happens on takeoff the plane can be diverted to best