to down do 100 feet. why would you ever allow somebody make a plane automatically fly at 100 feet. what good can come from that? >> part of it is we trust our pilots the entire system relies on some sort of sense they know what they're doing and this fell apart when you have a suicidal pilot. you could think of ways in which you could override a pilot who is putting in numbers that don't make sense do air traffic control. we rely on our pilots that's why there's so much focus on who are they are they getting the help they need. i have to agree with jim on not just the two pilots in the cockpits the but also the cameras. the reason why is no system is perfectly safe. but the more levels of security can you put in the more sort of barriers the more difficult you make it you reduce risk. you're not going to get it to zero there's always going to be the person you don't catch. the more barriers can you put on and the debate about cameras in the cockpit. we need to end it now. they need to get in there. weather as an investigation or as a deterrent.