Bachelor of science in computer science from University of Southern California, 1981; master of science in computer science from U.S. Naval Postgraduate School, 1990; master of science in space systems operations from U.S. Naval Postgraduate School, 1990; Lieutenant Colonel, USMC, Ret.; hobbies: Flying, running, snow skiing, racquetball, chasing after his children; he and his wife have triplets; later on Manager, Advanced Projects Office, Constellation Program, Johnson Space Center, since September 2007 he is Director, Safety, Reliability, and Quality Assurance Office.