SMITHFIELD, N.C. - With fresh ammunition from a University of North Carolina law school report, activists renewed their call Thursday for state officials to take legal action against Aero Contractors Ltd.

For years the Johnston County, N.C., air transport company, which has links to the CIA, has been accused of being a taxi service for paramilitary teams that pick up terrorism suspects in one country and fly them to another where it’s easier to interrogate and, perhaps, torture them. The process is known as extraordinary rendition.