This astonishing film (sadly, incomplete) shows portions of the Douglas World Flight. This was the first aerial circumnavigation of the world, which was conducted in 1924 by a team of aviators of the United States Army Air Service, the precursor of the United States Air Force. The trip took 175 days, covering over 27,553 miles (44,342 km). Four aircraft, Seattle, Chicago, Boston, and New Orleans, left Santa Monica, California, on 4 April 1924, for Sand Point, Washington, near Seattle, Washington, the official start of the journey. On 6 April 1924, they left Seattle for Alaska. After reaching Prince Rupert Island, the lead aircraft Seattle, flown by Maj. Frederick Martin with Sgt. Alva Harvey (the only fully qualified mechanic in the flight), needed repairs and remained behind. When it was repaired, the crew attempted to catch up with the other three aircraft, but on 30 April, Seattle crashed in dense fog into a mountainside near Port Moller, Alaska on the Alaska Peninsula. The crew survived and were picked up on 10 May, but the aircraft was destroyed. The three remaining aircraft continued, with Chicago flown by Lt. Smith and 1st Lt. Arnold, assuming the lead. Taking off from the Aleutian Islands, the flight traveled across the North Pacific archipelago. Avoiding the Soviet Union, which had not given permission for the expedition to cross into their airspace, they crossed Japan, Korea, the coast of China, Hong Kong, French Indochina, Thailand, Burma, and India, and proceeded into the Middle East and then Europe. The flight arrived in Paris on Bastille Day, 14 July. From Paris the aircraft flew to London and on to the north of England in order to prepare for the Atlantic Ocean crossing. On 3 August 1924, while flying across the Atlantic, Boston was forced down. After a hero's welcome in the capital, the three Douglas World Cruisers flew to the West Coast, on a multi-city tour, stopping briefly in Santa Monica and finally landing in Seattle on 28 September 1924. The trip had taken 175 days, and covered 27,553 miles (44,342 km). The Douglas Aircraft Company adopted the motto, "First Around the World – First the World Around". The American team had greatly increased their chances of success by using several aircraft and pre-positioning large caches of fuel, spare parts, and other support equipment along the route. At prearranged way points, the World Flight's aircraft had their engines changed five times and new wings fitted twice.