First held in 1920 at Mitchel Field outside of New York City, the National Air Races were an annual, week-long event including formation flying, parachute drops, aerobatic displays, and closed-circuit and cross-country air races. Through the 1920s, the location of the Races moved to a different American city each year, occurring at Cleveland, Ohio, for the first time in 1929. In the 1930s, the Races settled almost permanently at Cleveland Municipal Airport (later known as Cleveland Hopkins International Airport), with only the 1930, 1933, and 1936 races held in Los Angeles, California. The Races were suspended from 1940 to 1945 due to World War II, but resumed at Cleveland in 1946, with the post-war contestants now including many military surplus aircraft. The National Air Races, meant to be the high point of the air racing year, included privately sponsored races to both foster the development of aircraft and raise the profile of the sponsors. The 1948 Races (held September 4-6, 1948) and 1949 Races (held September 3-5, 1949) featured trophy races sponsored by Ohio companies Bendix Corporation, the Goodyear Tire and Rubber Company, Standard Oil of Ohio (Sohio), and the local Cleveland companies Tinnerman Products (makers of fasteners used in aircraft construction) and Thompson Products (makers of high-performance valves for both aircraft and automobile racing engines). High-speed aircraft races certainly helped draw huge crowds to the airport to see the action, but tragically, on September 5, 1949, Bill Odom, piloting the modified North American P-51C Mustang "Beguine" in that day's Thompson Trophy Race, crashed into a house in the Cleveland suburb of Berea, Ohio, killing himself and a woman and child. Berea and other municipalities in the area quickly passed ordinances prohibiting air racing in their airspace, signaling the end of the National Air Races as they had existed up to that point. The races would be reborn decades later in 1964 at Reno, Nevada, as the National Championship Air Races.