This building serves as the Terminal Radar Approach Control (TRACON) facility for aircraft approximately two to thirty miles from the Seattle-Tacoma (SeaTac) International Airport. TRACON facilities handle some of the busiest air traffic control functions anywhere within national airspace. In 2002, SeaTac was the 15th busiest passenger airport in the U.S., controlling 26 million people on 364,000 flights. **This building was originally imported from the U.S. Department of Energy Energy Efficiency and Renewable Energy Building Technologies Database (http://eere.buildinggreen.com/overview.cfm?projectid=342) on 2009-06-06. Please confirm that the import was successful, login, and remove this message. Help make the Green Building Brain better.** READ MORE