The Transportation Security Administration (TSA) is a U.S. government agency responsible for ensuring the safety of travelers in the nation's transportation systems. Established after the events of September 11, 2001, the TSA implements security measures at airports and other transportation hubs to prevent threats and protect passengers. Their work includes screening luggage and passengers, as well as overseeing the security of air travel. To achieve its mission, the TSA employs various technologies and procedures, such as body scanners and baggage checks. They also provide guidelines for travelers, including what items are allowed on flights. The TSA plays a crucial role in maintaining public confidence in the safety of air travel.