He was educated at Pennsylvania State University (Bachelor of Science) and Stanford University (Mississippi). He also later studied at the Advanced Management Program at Harvard Business School.
In 1957, Fiester joined General Telephone and Electric Government Systems Corporation (which would be acquired by General Dynamics in 1999), a company that designed and developed information security, electro-optics, and automated airport weather stations. Fiester was associated with General Telephone and Electric Government Systems Corporation for his entire career, eventually becoming a group vice president and general manager.
On November 1, 1993, President of the United States Bill Clinton nominated Fiester to be Assistant Secretary of the Air Force (Acquisition), and he subsequently held office until his death.
Fiester died in a plane crash near Alexander City, Alabama on April 17, 1995. He had been flying on an Air Force Learjet 35 from Andrews Air Force Base to Randolph Air Force Base when the crash occurred.
President Clinton granted a presidential waiver to allow Fiester to be buried in Arlington National Cemetery.
Also killed in the crash were Colonel Jack Clark II, Fiester"s military deputy. Major General Glenn A. Profitt World War II And five other members of the Air Force.