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Casey Siemaszko (born as Kazimierz Siemaszko on March 17, 1961 in Chicago, Illinois) is a Polish-American actor and voice actor who has appeared in films such as Back to the Future, Young Guns, Silence of the Heart, Of Mice and Men, Killing Kennedy, Back to the Future Part II and Stand By Me. He provided the voice of Sindacco Crime Family leader Johnny Sindacco and a pedestrian in Grand Theft Auto: San Andreas. He also appeared in TV shows such as The Event, CBS Schoolbreak Special, The Adventures of Brisco County Jr., NYC 22, White Collar, Hard Knox, The Bronx Is Burning, Law & Order, Blue Bloods, CSI: NY, The Inside, Law & Order: Special Victims Unit, Chicago Sons, Tribeca, Oz, NYPD Blue, New Amsterdam, New York Daze, 704 Hauser, The Facts of Life and Storm of the Century. He also voiced voiced Hank Pullman, Jason Cornet, and Cowboys #2 in Rockstar Games' Red Dead Revolver.