Rise. yo use these rules to help get around high prices, but once you're in the sky, you'll follow the airline's rules, but almost one third of airline passengers found they left on a portable electronic device in flight when they weren't supposed to. that has the faa concerned. but can a blue tooth really bring down an airplane? renee marsh, aviation and government regulation correspondent joins me now. renee? >> that's right, christine. well, you know, it's the rule at takeoff and touchdown. turn off all electronics. the faa expects to get recommendations from an advisory group this monday t...