 Haller City was absorbed by the larger Arlington, which was incorporated as a city in 1903.During the Great Depression of the 1930s, the Arlington area was the site of major projects undertaken for employment under the direction of federal relief agencies, including construction of a municipal airport that would serve as a naval air station during World War II.Beginning in the 1980s, Arlington was affected by suburbanization due to the expansion of Seattle, growing by more than 450 percent by 2000 and annexing the unincorporated area of Smokey Point to the southwest.