What is a key feature of the TSA's creation under the Aviation and Transportation Security Act?

The key feature of the TSA's creation under the Aviation and Transportation Security Act is the replacement of contractors with professional screeners. This was a significant reform aimed at enhancing aviation security in response to the increased threats identified during events like the September 11 attacks. By establishing the Transportation Security Administration, the government sought to standardize and improve the qualifications of personnel responsible for security screenings at airports. This shift was intended to ensure that screeners were better trained, more accountable, and operated under federal oversight, contrasting previous practices where various contractors had employed personnel with varying levels of training and expertise. This change aimed to build greater public confidence in the safety of air travel and improve the overall effectiveness of security measures.