Actor James Tolkan, known for his roles as a cigar-chomping naval commander in Top Gun and a gruff high school administrator in Back to the Future, has died. He was 94. Tolkan died Thursday in Lake Placid, New York, where he lived, his booking agent, John Alcantar, said Saturday. A brief obituary published on the Back to the Future website said Tolkan died "peacefully," but no cause of death was given.