Casey Siemaszko

Kazimierz Andrew "Casey" Siemaszko (sha-MAH-sko) is an American actor. Among supporting roles in films such as Back to the Future (1985) and Stand by Me (1986), he also is known for his starring roles in films such as Three O'Clock High (1987) and Breaking In (1989), along with numerous small roles in film and television, and Pat Fraker in NYPD Blue (1996; 2002-2004), and as Jack Ruby in Killing Kennedy (2013).