James Comey's official portrait as the Seventh Director of the Federal Bureau of Investigation.
James Comey, who succeeded Mueller as FBI director in 2013 and had stood beside him during the 2004 hospital-room standoff over warrantless surveillance. "A great American died today," Comey wrote, "one I was lucky enough to learn from and stand beside." © Federal Bureau of Investigation, Public domain, via Wikimedia Commons

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