 The fight between Nada (Roddy Piper (qv)) and Frank  (Keith David (I) (qv)) was only supposed to last 20 seconds, but  Piper and David decided to fight it out for real, only faking the  hits to the face and groin. They rehearsed the fight for three  weeks. Carpenter was so impressed he kept the 5 minute and 20 second  scene intact.