 After retiring in 2005, he continued as a consultant and CIA's representative to the Interagency Working Group on Nazi War Crimes.The team worked to declassify information from the agency's files and as of June 2006 had released 27,000 pages from 174 files, much of it new material.Former CIA directors Michael V. Hayden and George Tenet issued statements praising him as "truly exceptional" and "indispensable."