investigation again they're not looking at terrorism. the ntsb which usually takes the lead in commercial airline crashes because they're looking at all kinds of things of maybe maintenance problems or mechanical problems they're not taking the lead they may not send a crew because it doesn't look like there's anything more to this than a man whose suicidal and not able to fly a plane. trish? trish: dan springer thank you very much joining me former uss commander and private pilot, kirk liphold. good to have you here, sir. how does this happen? given what we've been through, given 9/11, how could this occur >> well when you have ground maintenance personnel like that, a lot of them achieve qualifications where they get to be able to move aircraft around, where they actually will go up with pilots when they do post- maintenance check flights, so there was probably a degree of familiarity in how the aircraft operated how to start it how to shut it down. he could have been qualified in all those thins and when you