Milo, your link is fascinating, not so much for Colonel Stillwell, but for the other man in the photo, "Elliot Ness". It seems that this indeed was the famous Eliot Ness, leader of the "Untouchables", and nemesis of the likes of Al Capone. Ironic that a man who survived so many attempts on his life by such violent thugs should end up as "Public Safety Director" of the City of Cleveland. Perhaps "safety" had different connotations then! Even more ironic that a man whose job was enforcing Prohibition should lose his job and reputation following a "drunk in charge" incident:
Eliot Ness Biography - Facts, Birthday, Life Story - Biography.com
As to Braniff, I had no idea that Michael Heseltine once flew for them. The things you learn here!