Don’t think I’ve ever seen one in flight, must be a pretty impressive sight.
It really is, the damned thing is just a flat silhouette against the sky, it just doesn’t look like it ought to fly!
I saw one a few years ago at Fairford for the RAIT, it came over with an escort of a pair of F-15 Eagles, which then peeled away, the Spirit did two or three low passes, then landed, to everyone’s surprise.
The crew met RIAT officials and staff, then a little later it taxied out, took off, and as it climbed away its escort came up behind it to escort it back to its base in the States.
Amazing thing to see.
One thing about the Spirit, the planform isn’t what was originally designed, the Air Force demanded changes, that weren’t necessary, and which cost a lot of time and money.
The new B-21 Raider is the shape that the B2 should have been, it’s simpler, but just as effective.