In 1975 Sam Peckinpah filmed part of The Killer Elite in Portsmouth Square .
In 1975 Sam Peckinpah hired Kuo Lien Ying and many of his students for the scenes of a martial arts school in San Francisco .
In 1975 Sam Peckinpah filmed part of The Killer Elite in Portsmouth Square , and hired Kuo Lien Ying and many of his students for the scenes of a martial arts school in San Francisco .