I managed to grab a couple of personal days during a trip to the east coast last month and visited the Steven F Udvar Hazy Centre. The lighting sucks but the content is superb as are the raised walkways.
More pics here if you're interested: https://www.hanger51.org/aircraft-museums/us-museums-collections/steven-f-udvar-hazy-centre/
Coast Guard rescue by tony_inkster, on Flickr
F-14 Tomcat by tony_inkster, on Flickr
Big yellow by tony_inkster, on Flickr
F4U Corsair by tony_inkster, on Flickr
Sikorsky HNS-1 by tony_inkster, on Flickr
Dornier Do 335 by tony_inkster, on Flickr
P-61 Blackwidow by tony_inkster, on Flickr
B-26 Marauder Flak Bait by tony_inkster, on Flickr
Mig 15 by tony_inkster, on Flickr
Arado Ar 234 Blitz by tony_inkster, on Flickr
USAAF P-40 by tony_inkster, on Flickr
F-4S Phantom by tony_inkster, on Flickr
USS Discovery by tony_inkster, on Flickr