|Historical Layer: 28 May 1994|
Neither of these aircraft were flyable, instead serving as static test articles. The two aircraft are the B-2 static test airframes, referred to as "iron birds". In 2004, one of the test articles (s/n AT-1000) built without engines or instruments for static testing was placed on display at the National Museum of the United States Air Force near Dayton, Ohio. The test article passed all structural testing. The Museum's restoration team spent over a year reassembling the fractured airframe.