Question: Which film has the director who is older than the other, Hellfighters (Film) or Sky Patrol? 
Sentence (from "Howard Bretherton"): Howard Bretherton( 13 February 1890, Tacoma, Washington – 12 April 1969, San Diego, California) was an American film director, film editor, and the father of film editor David Bretherton.
Relevant evidence: Yes