PERSONAL DATA: Born June 20, 1953, in Boston, Massachusetts. Married to the former Janet M. Helms of West Lafayette, Indiana. They have two children. He enjoys golf, running, and reading. His mother, Mrs. Anne C. Duffy, resides in Hingham, Massachusetts. His father, Mr. Daniel E. Duffy, is deceased. Her parents, Mr. & Mrs. John J. Helms, reside in Ft. Myers, Florida.

EDUCATION: Graduated from Rockland High School, Rockland, Massachusetts, in 1971; received a bachelor of science degree in mathematics from the United States Air Force (USAF) Academy in 1975, and a master of science degree in systems management from the University of Southern California in 1981.

ORGANIZATIONS: Member of the United States Air Force Academy Association of Graduates, the Air Force Association, and the Association of Space Explorers.

SPECIAL HONORS: Distinguished Graduate of USAF Undergraduate Pilot Training where he was awarded the UPT Flying Training Award. Distinguished Graduate of USAF Test Pilot School Class 82B. Awarded the Distinguished Flying Cross, Defense Meritorious Service Medal, Defense Superior Service Medal, Air Force Meritorious Service Medal, Air Force Commendation Medal, and NASA Space Flight Medals.

EXPERIENCE: Duffy graduated from the USAF Academy in 1975. He completed Undergraduate Pilot Training at Columbus Air Force Base, Mississippi, in 1976, and was selected to fly the F-15. He was stationed at Langley Air Force Base, Virginia, until 1979. At the end of 1979 he transferred to Kadena Air Base, Okinawa, Japan. He flew F-15's there until 1982 when he was selected to attend the U.S. Air Force Test Pilot School. Following graduation, he served as the Director of F-15 Tests at Eglin Air Force Base, Florida.

He has logged over 5,000 hours of flight time in more than 25 different aircraft.

NASA EXPERIENCE: Selected by NASA in June 1985, Duffy became an astronaut in July 1986. Since then, he has participated in the development and testing of displays, flight crew procedures, and computer software to be used on Shuttle flights. He also has been a spacecraft communicator (CAPCOM) in Mission Control during numerous Space Shuttle missions, served as Assistant Director (Technical) and, most recently, was the Deputy Director (Acting) of the Johnson Space Center. In this role he assisted the Center Director in the direction and management of JSC's resources, functions, and programs and projects assigned to the Center. A veteran of three space flights, he has logged over 667 hours in space. Duffy was the pilot on STS-45 (March 24 to April 2, 1992), the first of the ATLAS series of missions to address the atmosphere and its interaction with the Sun. He also was the pilot on STS-57 (June 21 to July 1, 1993). Mission highlights included retrieval of the European Retrievable Carrier with the Shuttle's robotic arm, a spacewalk by two crew members, and an assortment of experiments in the first flight of the Spacehab middeck augmentation module. Duffy commanded a six-man crew aboard Endeavour on STS-72 (January 11-20, 1996). During the 9-day flight the crew aboard Endeavour retrieved the Space Flyer Unit (launched from Japan 10-months earlier), deployed and retrieved the OAST-Flyer, and conducted two spacewalks to demonstrate and evaluate techniques to be used in the assembly of the International Space Station.

Colonel Duffy will command the crew of STS-92 on the third Space Shuttle mission to assemble the International Space Station. Launch is scheduled for mid 2000.