cnn aviation expert and an aviation attorney as well, and mr. jeffrey beady, national security studies at the university of new haven and former fbi, cia and the delta force terrorism expert. the credential does not be better. now, let's test the insight as we vet information coming out of this thanks to both of you for being here. the big headlines today, first about the pilot. he has a flight simulator, not unusual. they say that he was deleting data from that simulator as opposed to from his home computer. we have an expert who is in the flight simulator business, he says he doesn't understand why would you do that. insight, mary? >> well, i mean, i certainly don't have one that's probably as sophisticated as his, but on the flight simulators that you have on your desktop, it saves lot of your plays, so you can see what you've flown before and how you're doing fanned you're a desktop pilot, getting better. there really suspect any need to have to delete that data and does look interesting why it was deleted but it was testimony leeted some time before the