Bridget Mason is an agent with the ODNI.
That stands for the Office of the Director of National Intelligence. In explanation of who they are, their website states: "Our mission is to lead intelligence integration and forge an intelligence community that delivers the most insightful intelligence possible". It goes on to explain "The core mission of the ODNI is to lead the IC in intelligence integration, forging a community that delivers the most insightful intelligence possible. ODNI’s National Centers integrate and coordinate the activities of the entire IC, or in some cases,
broader U.S. Government in the IC’s major mission areas: counterterrorism, cybersecurity, counterproliferation and counterintelligence".
Mason holds the rank of Major having come to the ODNI from working for some time in the DIA.