Jack Daniels is one of the three U.S. pentathletes to win two Olympic medals, both in the team event. In 1956 he finished 13th individually based on the strength of a second in riding. In 1960 he was eighth individually with a third place in swimming. Daniels won the 1958 National Championships, was second in that event in 1957 and 1962, and third in 1960. He had a career in the Army but became an exercise physiologist and has been known for assisting with the training of many high caliber athletes. He later also became a well-known coach at SUNY Cortland.