Shield of Honor is predicated on the fact that, in 1927, several big-city police departments were contemplating formation of their own "airborne" units. Neil Hamilton stars as Jack MacDowell, the L.A. Police Department's very first "fly cop." He gets a golden opportunity to display his aviation skills when the father of his sweetheart Gwen O'Day (Dorothy Gulliver) is the victim of a jewel robbery. Climbing into the cockpit with his police officer father Dan McDowell (Ralph Lewis), Jack chases down the thieves in a thrilling nocturnal air chase. The film was directed by Emory Johnson, a longtime specialist in "working man" pictures.