Efficiency and effectiveness of TSA's visible intermodel prevention and response program within rail and mass transit systems (redacted) / Department of Homeland Security, Office of Inspector General.

Transportation Security Administration [electronic resource] : high-level attention needed to strengthen acquisition function : report to congressional requesters.

Transportation security [electronic resource] : additional actions could strengthen the security of intermodal transportation facilities / [Charles Jeszeck].

Irregularities in the development of the Transportation Security operations center [electronic resource] : (redacted).

DHS must address significant security vulnerabilities prior to TWIC implementation [electronic resource].

Improving surface transportation security [electronic resource] : a research and development strategy / Committee on R & D Strategies to Improve Surface Transportation Security [and others], National Research Council.

Building a secure nation : safeguarding America's transportation system : Transportation Security Administration strategic plan, executive summary.

Transportation Security Administration's management of its screening workforce training program can be improved [electronic resource].

Transportation systems sector-specific plan [electronic resource] : an annex to the national infrastructure protection plan.

Transportation security [electronic resource] : DHS efforts to eliminate redundant background check investigations : report to congressional committees.

Transportation security infrastructure modernization may enhance DHS screening capabilities, but it is too early to access results [electronic resource] / [Stephen M. Lord].

Transportation security [electronic resource] : actions needed to address limitations in TSA's transportation worker Security Threat Assessments and growing workload : report to congressional committees.