Four-and-a-half hours after taking off from Paine Field in Everett, Wash., the plane touched down--seen here--at Boeing Field. During the flight, the pilots took the plane as high as 20,000 feet, and up to 250 knots, and put it through a series of tests.
March 20, 2011 5:00 PM PDT
Photo by: Daniel Terdiman/CNET
| Caption by: Daniel Terdiman
Conversation powered by Livefyre