How 9/11 reshaped aviation security and air travel over 25 years

25 years later, 9/11 still shapes the way we fly. Here's how air travel changed after the attacks.

A TSA security checkpoint at John Wayne Airport in Santa Ana, California. Jeff Gritchen/MediaNews Group/Orange County Register via Getty Images Aviation security was completely overhauled after the terrorist attacks of September 11, 2001. The TSA, which federalized airport security, was established in November 2001. After 9/11, only ticketed flyers were allowed past security, and cockpit doors were bulletproofed. Flying has completely changed since Al Qaeda hijackers carried out the terrori...