DR. THOMAS CALLAGHAN Chief Biometric Scientist FBI Laboratory Profile Thomas F. Callaghan is the Chief Biometric Scientist for the FBI Laboratory, and serves as the FBI senior advisor for human DNA identification. Dr. Callaghan has served as a member of Interpol's DNA Monitoring Experts Group and the G8 Law Enforcement DNA Technical Working Group. He has over 35 years of DNA analysis experience. As a member of the FBI DNA Analysis Unit, he was involved in the analysis of hundreds of homicide and rape cases. Dr. Callaghan was the first CODIS Unit Chief and has been involved with the CODIS Program for over 25 years. Dr. Callaghan currently manages the FBI's Rapid DNA Program Office and serves as chairman of the Criminal Justice Information Services Advisory Policy Board's Rapid DNA Task Force.