Transportation Security Administration
The Transportation Security Administration was formed immediately following the September 11, 2001 attacks. The agency is a component of the Department of Homeland Security (DHS) and is responsible for security of the nation's transportation systems.
With state, local and regional partners, TSA oversees security for the highways, railroads, buses, mass transit systems, ports and the 450 U.S. airports. TSA employs approximately 50,000 people from Alaska to Puerto Rico to ensure your travels – by plane, train, automobile or ferry – are safe and secure.