Founder, Callahan Associates International
Sioux Falls, N.D., 1941.
BS from University of Nebraska, 1964; MBA from Creighton University, 1972.
First job was as a lineman for Bell system. President of U S West International from 1991-95. Co-founder of TeleWest, second-largest British cable company, and British mobile operator One2One.
Married to Mary Celeste; three children. Divides time between Denver and London.
Football: Played in the 1964 Orange Bowl. Now favors skiing and golf.