well-developed spy agencies, the majority of captured non-native NOC agents have, however, historically been repatriated through prisoner exchanges for other captured NOCs as a form of gentlemen's agreement. Some countries have regulations regarding the use of non-official cover: the CIA, for example, has at times been prohibited from disguising agents as members of certain aid organizations, or as members of the clergy. The degree of sophistication put into non-official cover stories varies considerably. Sometimes, an agent will simply be appointed to a position in a well-established company which can provide the appropriate opportunities. Other times, entire front companies can be established in order to provide false identities for agents. Examples include Air America, used by the CIA during the Vietnam War, and Brewster Jennings & Associates, used by the CIA in WMD investigations and made public as a result of the Plame affair. Examples Former MI6 officer "Nicholas Anderson" wrote an account of his service in a fictionalized autobiography (as per British law) entitled NOC: Non-Official Cover: British Secret Operations, and two sequels: NOC Twice: More UK Non-Official Cover Operations and NOC Three Times: Knock-On Effect (Last of the Trilogy). Michael Ross, a former Mossad officer, operated as a Mossad NOC or "combatant" as described in his memoir, The Volunteer: The Incredible True Story of an Israeli Spy on the Trail of International Terrorists (Skyhorse Publishing, September 2007, ). Fictional notable examples include Chuck Barris, who made a satirical claim to have been a NOC with 33 kills in his book and movie Confessions of a Dangerous Mind. Other examples are featured in the books Debt of Honor and The Eleventh Commandment; the films Mission: Impossible, Spy Game, The Bourne Identity, Safe House, and The Recruit; and the television shows The Americans, Burn Notice, Spooks, The Night Manager, Covert Affairs, The Spy, and Patriot. See also Illegals Program Secret identity Sleeper agent References Covert organizations Spies by role