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Seattle-Tacoma International Airport is the primary air transportation hub for Washington state and the northwestern United States.
The Central Puget Sound Region is the airport's service market:
The region is a national center for manufacturing, high technology, services, international travel and tourism.
The Boeing Co. is the region's largest employer and the major corporations that are headquartered here include Airborne Express, Alaska Airlines, Amazon.com, Attachmate, AT&T Wireless, Costco, Microsoft, Nintendo, Nordstrom, Paccar, Phillips Medical Systems, REI, Safeco, Starbucks, Washington Mutual Bank, Western Wireless and Weyerhauser.
Domestic and international trade is a foundation of the region and state's strong economy and quality of life. Washington is the nation's fourth largest exporter behind California, New York and South Carolina. On a per-capita basis, Washington leads the nation in international trade with one in every three jobs tied to trade. Air transportation, coupled with the region's seaports and rail links, plays a key role in facilitating the area's trade-dependent economy.