The Convair YF-106A (F-102B) Delta Dart here on 26 Dec 1956 with Convair chief test pilot, Richard L. “Dick” Johnson who took the delta-winged interceptor to Mach 1.9 at 57,000 ft on its first flight OTD this day 26 Dec 1956. Edwards History Office file photos on Facebook

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 as well as the FC buzz code as being an F-102B.