Because there seems to be some confusion, let me clarify.
The CONFIRMED locations for the TAR 22 Finale are:
Dulles Airport (flight determined by Chateau); photo confirmation by StephenWasHere
DC area (Chateau)
First ID of Area's covering the next 4 locations : (TAR detective team of slowhatch, caper, Plaidmoon,and walkingpneumonia)
First sighting confirmations:
Old Post Office Pavilion (whammo)
Tidal Basin (stroche)
possible MLK task or lost team? (whammo)
National Park Stadium (ID'd by Chateau and peach, photo confirmation by stroche)
Mount Vernon (pitstop) walkingpneumonia
In accordance with RFF's policies re not revealing locations before the racers arrive safely at a place, some of these locations could not be pre-revealed publicly, but your Detectives teams were hard at work on them!
Looks like this will be a wonderful Finale Leg, many thanks to the whole group who spent days on this!