What significant change occurred in airport security after 9/11?

The creation of the Transportation Security Administration (TSA) is a significant change that occurred in airport security following the events of September 11, 2001. After the attacks, there was an urgent need for improved security measures to protect air travel and prevent similar incidents from occurring in the future. The TSA was established in November 2001 as part of the Aviation and Transportation Security Act, which mandated that federal oversight and standards be applied to aviation security.

The TSA implemented various protocols, such as increased passenger screening, more stringent baggage checks, and the deployment of advanced technology to detect potential threats. This shift represented a move from a previously decentralized and privatized system of airport security to a unified federal authority responsible for ensuring consistent and comprehensive security measures across all airports. The TSA continues to evolve its practices and policies to address emerging threats and adapt to changes in the aviation landscape.