The National Museum of the United States Air Force (official name but commonly known as the Air Force Museum) at Wright-Patterson AFB is still open. However, there are two hangers, the “Presidential Aircraft” and “Experimental Aircraft” hangers, that have been closed. These hangers are inside the Area-B section of WPAFB and only accessible to the public via a reserved bus ride from the main Museum. Support for these bus rides have been cut due to the sequester.
What a cool museum. I visited over 20 years ago. At the time there was an F-4 cockpit you could climb into, and an SR-71 on display.
Too bad! The XB-70 is one of my favorites and is located in one of those areas.