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John O'Neill: Maverick counter-terrorism expert in the FBI. O'Neill tracked Osama bin Laden since 1995. He knew more about Osama than anyone in the world. He tracked him past the Embassy bombings in 1998 and the Cole bombing in 2000. He knew more about Osama and al Qaeda than anyone in the world.
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In the summer of 2001, he resigned as Deputy Director of the FBI. At the same time, he was publicly opposed to the anti-terrorism policies of President George W. Bush. On September 10th, 2001, he started his new job, with a company called Kroll Associates, as head of security at the World Trade Center. A day later, he was dead, a victim of the September 11th terrorist attacks. He died at the World Trade Center.