Code of the AirCode of the Air is a 1928 American silent thriller film directed by James P. Hogan and starring Kenneth Harlan, June Marlowe and Arthur Rankin.Cast Kenneth Harlan as Blair Thompson June Marlowe as Helen Carson Arthur Rankin as Alfred Clark William V. Mong as Professor Ross Paul Weigel as Doc Carson James Bradbury Jr. as Stuttering Slim Silver Streak as Silver Streak