> before the day was over, it was no longer possible to hijack a plane and fly it into a building These aren't hijackings but your statement is factually dubio

> before the day was over, it was no longer possible to hijack a plane and fly it into a building These aren't hijackings but your statement is factually dubious: https://en.wikipedia.org/wiki/2002_Pirelli_Tower_airplane_crash https://en.wikipedia.org/wiki/2002_Pirelli_Tower_airplane_cr... https://en.wikipedia.org/wiki/2002_Tampa_Cessna_172_crash https://en.wikipedia.org/wiki/2002_Tampa_Cessna_172_crash https://en.wikipedia.org/wiki/2006_New_York_City_plane_crash https://en.wikipedia.org/wiki/2006_New_York_City_plane_crash https://en.wikipedia.org/wiki/2010_Austin_suicide_attack https://en.wikipedia.org/wiki/2010_Austin_suicide_attack https://en.wikipedia.org/wiki/2014_Wichita_King_Air_crash https://en.wikipedia.org/wiki/2014_Wichita_King_Air_crash