(Seattle, WA)  --  The 40th anniversary of the Seattle Mariners is being celebrated with a new airplane.  Alaska Airlines  unveiled a new Mariners-themed Boeing 737 at the Seattle-Tacoma Airport yesterday.  The plane features the Mariners logo and the 40th anniversary design across the fuselage.  The plane's first flight was to Orange County yesterday morning and everyone on the flight got a Mariners hat.