Feelthere have added Seattle’s SeaTac (Seattle-Tacoma) International Airport, KSEA, to the locations you can control within Tower 2011.
Well known to many flight simmers as the starting point for FS2004, KSEA is the primary hub for both Alaska Airlines and Horizon Air, along with being a destination for most major international airlines and internal US carriers. This add-on works with both the single player and multiplayer versions of the ATC sim.