Harry Morgan (born April 10, 1915) is an American actor. Morgan is perhaps best known as Colonel Sherman T. Potter on M*A*S*H (1975-83), Pete Porter on both Pete and Gladys (1960-62) and December Bride (1954-1959), Detective Bill Gannon on Dragnet (1967-70), and Amos Coogan on Hec Ramsey (1972-74). He has appeared in more than 100 films.