Rainbow Six

Rainbow Six is a techno-thriller novel written by Tom Clancy. It focuses on John Clark, Ding Chavez, and a fictional multi-national counterterrorist unit codenamed Rainbow, rather than Jack Ryan and national politics.

Several NATO countries have collectively organized an elite counterterrorist unit, composed of the best soldiers from the militaries of several nations, named Rainbow. Based in Hereford, England (real-life home of 22 SAS, the UK special forces unit), the team is led by John Clark (who had the idea for Rainbow), a recurring character in Clancy's novels. Rainbow is "blacker than black," its American funding directed through the Department of the Interior by Congress, then through The Pentagon's Office of Special Projects, with no connection whatsoever to the Intelligence Community. Fewer than a hundred people in Washington, D.C. know that Rainbow exists.