25 Years Later, Flying Runs on Security Layers You Might Not Recognize

The article traces how the 9/11 attacks rewired air travel—from creating the TSA and fortifying cockpit doors to later rules like shoe removal, the 3-1-1 liquids policy, and the adoption of full-body scanners and biometrics. It explains how security became a layered, technology-driven process (including PreCheck, REAL ID, and facial recognition), how flights, staffing, and fares changed over time, and the ongoing debates about privacy and effectiveness as the next 25 years of air travel unfold.