Homeland Security Transportation Infrastructure

Discuss transportation systems (Le. rail, air, maritime) providing specific historical examples of where private security companies/contractors are either providing 100% of the security requirements, or providing critical support in a partnership or contracted role. Because of the inter-connected nature of transportation modes via transportation hubs (La rail yards co-located with maritime ports) provide a specific example of where over-arching private security services/support are in place at these facilities.