>> that study says that pilots should actually have nine hours and we thought the controllers should, too. but look, if that's not enough hours, and that's really one of the reasons that the president of the controllers union are traveling the country starting in your bailey wick today in atlanta talking about workplace rules and about more rest and if it needs to be more, then we'll take that into consideration. we think nine hours is probably the right amount of rest but if it's not, we'll do better. >> how do you actually hold those air traffic controllers accountable? let's say they have a nine-hour rest period but they are not sleeping or resting. how do you actually change people's behavior? >> by telling them that they have to take personal responsibility for the idea that when they are supposed to rest, that means sleeping, that means resting, that doesn't mean doing other extracurricular activities. they need to take personal responsibility for the idea that for the lives of thousands of