Mobile weapons laboratories are bioreactors and other processing equipment to manufacture and process biological weapons that can be moved from location to location either by train or vehicle. Allegations that Iraq had access to such equipment were made by the United States in the lead-up to the Iraq War. Subsequent investigations failed to find any evidence of Iraq having access to a mobile weapons lab. Allegations In the run up to the 2003 Invasion of Iraq, the main rationale for the Iraq War were allegations that Iraq had failed to transparently and verifiably cease it's weapons of mass destruction (WMD) program. In February 2003, Secretary of State Colin Powell gave a presentation before the United Nations showing a computer image of what were purported to be mobile weapons for creating biological agents. He said Iraq had as many as 18 mobile facilities for making anthrax and botulinum toxin, stating "they can produce enough dry, biological agent in a single month to kill thousands upon thousands of people." Powell based the assertion on accounts of at least four Iraqi defectors, including a chemical engineer who supervised one of the facilities and been present during production runs of a biological agent. Following the invasion of Iraq two trailers were found and initially described as the alleged mobile labs. Intelligence Sources In the CIA briefing days before the 2003 United Nations security council presentation Colin Powell knew that all information included in the report had to be solid. "Powell and I were both suspicious because there were no pictures of the mobile labs," Wilkerson, Powell's chief of staff said. Powell demanded multiple sources and the two CIA men present George Tenet, then the CIA director and John E. McLaughlin, then the CIA deputy director claimed to have multiple eye witness accounts and supporting evidence. Wilkerson claims that the two said, "This is it, Mr. Secretary. You can't doubt this one" The information behind the mobile vehicles had come from the multiple informants but the main and most important one was known as Curveball. Curveball was an Iraqi refugee in Germany. He claimed that after he had graduated at the top of his chemical engineering class at Baghdad University in 1994, he worked for "Dr. Germ," the pseudonym of British-trained microbiologist Rihab Rashid Taha. He led a team that built mobile labs to create biological WMD Curveball was never actually interviewed by American intelligence