sentences:  That same year, Koffman began work at the National Security Agency in Fort Meade, Maryland as an electrical engineer.He was promoted to captain of the U.S. Army and assigned to the Defense Intelligence Agency in Washington, D.C. from 1967 to 1969.Koffman also began his teaching career in 1967, serving as a professorial lecturer at George Washington University, Washington, D.C. (1967–1969); an Assistant Professor (1969–1972) and Associate Professor (1972–1974) in the Department of Electrical Engineering and Computer Science at the University of Connecticut; and an Associate Professor (1974–1978) and Full Professor (1978–present) in the Department of Computer and Information Sciences at Temple University.