Aviation Security: Efforts to Measure Effectiveness and Strengthen Security Programs

Commercial aviation has been a long-standing target for terrorists. Since the tragic attacts of September 11, 2001, substantial changes have been made to enhance security--including the creation of the Transportation Security Administration (TSA) and the federalization of the passenger screener workforce. However, despite these changes, vulnerabilities in aviation security continue to exist. Accordingly, GAO was asked to describe TSA's efforts to (1) measure the effectiveness of its aviation security initiatives, (2) strengthen its passenger screening program, and (3) address additional challenges in further enhancing aviation security.