Mark Shera

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Mark Shera (born July 10, 1949, Bayonne, New Jersey)^[1] is an American film and television actor.

Shera was cast from 1975 to 1976 in the television series S.W.A.T. in the role of Officer Dominic Luca. He also played J.R. in the television series Barnaby Jones from 1976-1980.