 After Black Tuesday and the beginning of the Great Depression, the air service would be discontinued by the end of 1931.However, the air service would lead to the expansion beyond the West Coast; in 1930, the company moved operations from Oakland to New York City and established operations in other regions across the country as well.After World War II, UPS (in the process of acquiring common carrier rights for every address in the United States) revisited the idea of shipping packages by air.