lol ok. The targets which it shows at 17:34 are physical aircraft, not fake blips on a screen. The first part is the alleged swap between UA175 and UA93, to which has already been address. The second part is unknown to me. It's geographically no where near UA93 turned off course, not the mention UA93 turned South, not north.. But I mean it could be anything, and P4T does not offer any kind of altitude information for their targets.