Transportation Security: Post-September 11th Initiatives and Long-Term Challenges

This testimony responds to the request of the National Commission on Terrorist Attacks Upon the United States for information on GAO's work in transportation security. It addresses (1) transportation security before September 2001; (2) what the federal government has done since September 11th to strengthen transportation security, particularly aviation, mass transit, and port security; and (3) what long-term institutional challenges face the federal agencies responsible for transportation security. The testimony is based on a body of work that GAO has performed over the years.