J. D. Lock is a 1982 graduate and former assistant professor of the United States Military Academy at West Point. He retired from active duty as a lieutenant colonel in May, 2002. He enlisted in the U.S. Army as a private in 1974 and served as a noncommissioned officer until 1978.
He is the author of To Fight With Intrepidity: The Complete History of the U.S. Army Rangers, 1622 to Present (Simon & Schuster/Pocket Books), The Coveted Black and Gold: A Daily Journey Through the U.S. Army Ranger School Experience, and Rangers in Combat: A Legacy of Valor.
Lock currently works in support of architectural development, modeling, and simulation for the U.S. Army’s Current Force and the Army’s transformation to the Future Force, in addition to serving as a subject matter expert in support of the Army Science Board and the Army’s National Guard and Reserve senior mentor program.