Aerial refueling craft was eventually modified by Airspeed to Cobham's specification, for a non-stop flight from London to India, using in-flight refueling to extend the plane's flight duration. Meanwhile, in 1929, a group of U.S. Army Air Corps fliers, led by then Major Carl Spaatz, set an endurance record of over 150 hours with the "Question Mark" over Los Angeles. Between June 11 and July 4, 1930, the brothers John, Kenneth, Albert, and Walter Hunter set a new record of 553 hours 40 minutes over Chicago using two Stinson SM-1 Detroiters as refueler and receiver. Aerial refueling remained a very dangerous process
The Hollywood Revue of 1929 next two films he made, "His Glorious Night" (1929) and "Redemption" (1930). The circulating print of "The Hollywood Revue of 1929" runs as follows: The film, which was shot in 25 days with a budget of US$426,000, was popular with audiences and critics alike, especially in its initial big-city engagements. "Brimming over with good fun and catchy music", Mordaunt Hall of "The New York Times" wrote. "Variety" called it "the top novelty film to be turned out to date...If the theater booths give it an even break, nothing can stop it." "Film Daily" reported, "A smash and a wow. Smart