It's a mixed bag of emotions, funny, sad, amazed, that the USA is still flying the U2. Which is from the 60's, while the SR-71, the plane meant to replace it has already been decommissioned for over a decade now.
Just FYI, all the U-2s that are flying now were built in the 80s and feature numerous advances over the original generation of U-@s. I agree about the SR-71, I too have a soft spot for that plane. There is rumor of an SR-72 but AFAIK it's still on the drawing board.