X-15

The X-15 was an American rocket plane of the mid-20th century. It was used jointly by NASA and the United States Air Force. 
In the Shipyard Bar in the alternate reality, a picture of the X-15 was present. ()
In 2259 of the alternate reality, a replica of this aircraft was on display in the office of Admiral . ()
== External link ==
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fr:X-15
Category:Earth spacecraft classes