escape the busy commercial traffic lanes up above 18,000 feet. without a transponder, you would be at risk for a collision avoidance problem because your collision avoidance equipment wouldn't work. you'd need the transponder for that. so there are lots of reasons to go down. the issue is, you know, this is suspect information because they have it on radar, and then they don't have it on radar. this is a boeing 777. this is not -- you know, this is not a jet copter. it doesn't go from 35,000 feet to 5,000 feet in the blink of an eye. so didn't radar pick up the ascent and the descent? something about this isn't right, and i think we need more information. so even if they did dip down to 5,000 feet, they should have seen more than just all at once it's there, and all at once it's not. it doesn't work that way. >> jeff wise, this doesn't seem to pass the smell test for mary. what do you think? not to mention the fact we're only learning about it now, 34 days into this investigation. >> yeah, it's late. there's a bunch of problems. there's a bunch of reasons you wouldn't want to go down to