American Express opens its newest Centurion lounge today at Seattle-Tacoma International Airport. Called The Centurion Studio because its smaller (“cozier” in real-estate parlance) than Centurion lounges already operating in LAS, SFO, DFW, LGA, and MIA, this lounge is on Concourse B (by Gate B3) and includes a great view of the airfield and beyond as →