Republic YF-105A Published on October 23, 2012 in 22 October 1955Full resolution (1800 × 1218) Next → The first of two Republic YF-105A-1-RE Thunderchief prototypes, 54-098, on Rogers Dry Lake, Edwards Air Force Base, California, 1955. (U.S. Air Force)Republic YF-105A (S/N 54-0098, the first of two prototypes). (U.S. Air Force photo)