TRANSPORTATION SECURITY ADMINISTRATION

Airline passenger security screening services, namely, an expedited screening initiative that enhances aviation security and expedites the travel experience by pre-screening individuals who volunteer to participate in the program; Conducting personal security clearance background investigations; Public security services in the nature of passenger, baggage, and freight screening in connection with all modes of national transportation, namely, commercial and general aviation, mass transit systems, freight and passenger rail, highways, pipelines, and ports