Braddock, Dunn & McDonald, later known as BDM, then BDM International, was a technical services firm founded in 1959 in New York City. Its founders were Dr. Joseph V. Braddock, Dr. Bernard J. Dunn, and Dr. Daniel F. McDonald, who each received a PhD from Fordham University in the Bronx, New York. In 1997, TRW purchased BDM, and in 2002 Northrop Grumman bought TRW.