John S. Foster Jr.

John S. Foster Jr.
Foster Jr., c. 1966
Under Secretary of Defense for Research and Engineering
In office October 1, 1965 – June 21, 1973
President	Lyndon B. Johnson Richard Nixon
Preceded by	Harold Brown
Succeeded by	Malcolm R. Currie
Personal details
Born	John Stuart Foster Jr. (1922-09-18) September 18, 1922 (age 101) New Haven, Connecticut, U.S.
Education	University of California, Berkeley (PhD)
Occupation	Physicist

John Stuart Foster Jr. (born September 18, 1922) is an American physicist, best known as the fourth director of Lawrence Livermore National Laboratory and as Director, Defense Research and Engineering under four Secretaries of Defense and two Presidents.