Paul Christiano — Role / Title: Head of AI Safety, US AI Safety Institute

Note: The source directly confirms the claim. The NIST official website states Paul Christiano holds the exact title 'Head of AI Safety, U.S. Artificial Intelligence Safety Institute' in both the page heading and the opening sentence of the biography. The only minor variation is that the source uses 'U.S. Artificial Intelligence Safety Institute' while the claim uses 'US AI Safety Institute' - these are equivalent abbreviations of the same organization.