In September 1998, while in an official meeting of OPR with Special Agent Fox Mulder, Arnold expressed his opinion of Mulder's extreme arrogance, considered his recent report "unintellible," and informed him of his reassignment off of the X-Files. (TXF: "The Beginning") In 1999, Arnold delivered a report on federal crime projections for the next year. His report was interrupted by Arlene when Special Agent Mulder contacted them about an impending bank robbery. (TXF: "Monday") His report was interrupted several times, with the day resetting each time until Pam's death.