The defector is Do Van Tru, who served in various capacities along the Communist infiltration pipeline from early 2962 until September 1970, when he rallied. Tru bases his reports on personal observation, on conversations he had with Cambodian infiltrators, and on infiltration log books, to which he had frequent access. At the time of his defection, he was deputy chief of Common Liaison Group 45, subordinate to COSVN's postal transport service, which supervised the COSVN end of the pipeline. Tru is considered an unusually knowledgeable and accurate reporter. For example, he was the first intelligence source to identify the Communist Regions CIO, C20, and C30