I haven't see the one in Seattle. In DC, they have the Wright Flyer, SR-71, Emelia Earhart's plane, Discovery, Lindburgh's plane, SR-71, Appolo, Gemini, Mercury capsules, Discovery, Von Braun's rockets he made when he was 15, SR-71, chunks of Saturn V and pretty much any rocket or missile ever made, Discovery, a Concorde, SR-71, the Enola Gay, and Discovery.

They also have the SR-71 and Space Shuttle Discovery. When the SR-71 arrived, it set several records on its flight from LA to Dulles (1 hr, 4 minutes, but I couldn't find it on Strava), and was handed over to the Smithsonian on the runway. They call the Dulles Smithsonian A&S "America's Hangar," and that feels accurate. It's amazing, freaking amazing the hardware they have in there. The DC A&S museum is brilliant too, and I could spend a week each at both locations. DC is a bit more interactive, and Dulles is a bit more OMFG, that's an SR-71 and the freaking Space Shuttle.

Reported.