Thanks. One wag has called me the Bob Ross of IFR--I take that at as a compliment, just flying in the "happy clouds."

Boeing test flights often land, brake aggressively, and then run the engines up again and roll at "high-speed" to check systems associated with a rejected takeoff. The 737s are often on a first flight from the factory at Renton. As a rule, they only take off from KRNT--they don't land there again. The runway there is short with obstacles, etc., so they come to KBFI with its 10,000 ft runway to complete production test flights.