According to The Raw Story, Amnesty International is about to release evidence that the CIA utilized private aircraft operators and front companies to hide its rendition flights. The report presents locations throughout the world from which rendition flights landed and took off.
The countries that allowed the CIA to crross their airspace and use their airports cite the Chicago Convention, or Convention on International Civil Aviation, which allows private non-commercial flights to fly over a country without giving prior notification. Under this convention, states lack the authority to question why a private, non-commercial craft if flying over or making technical stops.
According to Amnesty International, the U.S. has transferred hundreds of individuals via rendition, and "rendition is part of an elaborate clandestine detention regime that includes the use of 'black sites' and 'disappearances,' as well as torture and inhuman treatment."