He was on active duty as a first lieutenant in the United States Air Force ( 1971 - 1973 ) .
Bickerstaff attended the University of Texas at Austin ( BA , 1968 ) and the University of Texas School of Law ( JD ) .
Bickerstaff was on active duty as a first lieutenant in the United States Air Force ( 1971 - 1973 ) .
Bickerstaff attended the University of Texas at Austin ( BA , 1968 ) and the University of Texas School of Law ( JD ) .