The pictures represent early attempts at designing stealth attack aircraft in the early seventies. The mission was to attack an SA-2 site.
The "Flying banana" and the "silent attack aircraft" are from North american, the surprise fighter is from Rockwell.
All vehicle incorporated FLIR and some sort of plug in the exhaust to prevent line of sight to the hot section. The surprise fighter was interesting in having pivoted wings which disappeared under the fuselage. I can only assume that penetration would occur at low altitude and high speed, and body lift was all that was needed. There is at least another later Rockwell bomber that relied on this concept, although in that case the design had a one piece oblique-wing hinged at the center as opposed to two variable geometry semi-wings. weapon launch in the Rockwell fighter was through a system similar to torpedo tubes. Exhaust doors at the back would open at the time of launch.