Make sure to listen to the music and announcements which feature 32 local Seattle artists who volunteered as part of the Experience The City of Music program.
TSA TIP #5 Once through the x-ray machines take your belongings (trays) off the belts & get re-packed & dressed in the areas designated for this rather than holding up the lines at the x-ray machines.
Absolutely one of the worst airports in America of the multitude that I visit. From the rental shuttle experience to the TSA experience to the terminal experience, this is the Flintstones of airports.
TSA TIP #1: Before getting to the screening check points clean out your clothing pockets as well as any metals/jewelry etcetera and put them into your carryon bags (or jacket pockets) ahead of time.