You're probably used to seeing TSA's signature blue uniforms at the airport, but now agents are hitting the interstates to fight terrorism with Visible Intermodal Prevention and Response (VIPR).

"Where is a terrorist more apt to be found? Not these days on an airplane more likely on the interstate," said Tennessee Department of Safety & Homeland Security Commissioner Bill Gibbons.

Tuesday Tennessee was first to deploy VIPR simultaneously at five weigh stations and two bus stations across the state.