The sections of the report concerned with assessments of Iraq's biological weapons programs, chemical weapons programs, and delivery systems contain extensive discussion of the problem of inadequate "human intelligence" for intelligence gathering in Iraq. There is discussion of "CURVEBALL," an Iraqi defector who provided much of the information regarding Iraq's alleged mobile bioweapons labs, although much of the material in this part of the report has been redacted. The report concludes that the October 2002 NIE and other statements regarding Iraq's biological and chemical WMD and associated delivery systems were for the most part not supported by the underlying intelligence data supplied to the Committee.