disclose, do we have depression, so on. and then in the middle of that we were doing stress type tests where one of the examples i can give you is that we listen to an airline traffic control tape talking with pilots during a thunderstorm event and then do geometry and math problems. and try -- the questions were asked later can we relay what happened with these particular questions. in other words, what did air traffic control say to such and such. do we have the ability to multitask which would also mean do we have psychological problems perhaps if we can't multitask in a typical pilot role. >> tom, you think cameras should be in the cockpit? >> i think you know, i think they will help. they wouldn't have anything to do with preventing what happened here, but certainly we've had enough question in other incidents, you know, that would to me would warrant it. we want to put cameras on police