The Convair YF-106A 56-0451 Delta Dart at Fort Worth TX before being dismantled and trucked to the Air Force Flight Test Center (AFFTC) Edwards AFB CA. This was the prototype provided by Convair as per the 18 April 1956 Air Force finalized F-102B production contract with Convair. It was the only aircraft to carry the 'YF'-106 MDS designation being the only prototype as well as the FC buzz code for being an F-102B. Notice the original curved intake lips, which were later changed.