US Army Colonel Lawrence Wilkerson, who served as Colin Powell's chief of staff when he was Chairman of the Joint Chiefs of Staff—at the same time Addington was Cheney's personal counsel as Secretary of Defense—and then later when Powell was Secretary of State, stated in an in-depth interview regarding extraordinary measures taken post 9/11: "The man who, to me, brings all of this together more than Cheney himself, because he has one foot in the legal camp—and I must admit it's a fairly brilliant foot—and he has one foot in the operator camp, that's David Addington."