Hmmm...I know Wikapedia isn't necessarily the gospel in every case; but... Design and development At first, the United States Air Force intended the conversion to be an easy matter of removing the carrier-specific features, so no prototypes were ordered, just five pre-production RB-66A models (the reconnaissance mission being considered a high priority). The list of modifications grew, and before long, the supposedly easy conversion became what was substantially a new aircraft. Many of the changes were due to the USAF's requirement for low-level operations, while the Navy version had originally been designed and employed as a high-altitude nuclear strike bomber. Two major differences between the A-3 and the B-66 consisted in the types of jet engines used, and the emergency crew escape systems. The A-3 had two J57 turbojet engines, whereas the B-66 had two Allison J71s. The B-66 was equipped with ejection seats whereas the A-3 was not. The first RB-66A pre-production aircraft flew in 1954, whereas the first production RB-66B aircraft flew in the beginning of 1955. The basic B-66 design proved to be a versatile one, and was produced or modified into a variety of other versions, including the EB-66, RB-66, and the WB-66. Likewise, many variants of the A-3 Skywarrior were produced. Operational history RB-66B of 19 Tactical Reconnaissance Squadron based at RAF Sculthorpe England in 1957 Deliveries to the Air Force began in 1956, with 145 of this model produced. RB-66s were used as the primary night photo-reconnaissance aircraft of the USAF during this time, many examples serving with tactical reconnaissance squadrons based in the United Kingdom and in West Germany. A total of 72 of the B-66B bomber version were built, 69 fewer than originally planned. A total of 13 B-66B aircraft later were modified into EB-66B electronic countermeasures (ECM) aircraft for the cold war with Russia, and were stationed at RAF Chelveston with the 42nd Tactical Reconnaissance Squadron who did the conversion in the early 1960s. They would rotate out of an alert pad in Spain during the time that the 42nd had them. These and the RB-66Cs that the 42nd had would eventually be sent to Vietnam. Unlike the U.S. Navy's A-3 Skywarrior, which performed some bombing missions, the Destroyer was not used as a bomber in Vietnam. Specifications (B-66) General characteristics Crew: 3 (Pilot, Navigator and EWO) Length: 75 ft 2 in (22.9 m) Wingspan: 72 ft 6 in (22.1 m) Height: 23 ft 7 in (7.2 m) Wing area: 780 ft² (72.5 m²) Empty weight: 42,540 lb (19,300 kg) Loaded weight: 57,800 lb (26,200 kg) Max. takeoff weight: 83,000 lb (38,000 kg) Powerplant: 2 × Allison J71-A-11 or -13 turbojets, 10,200 lbf (45 kN) each One of the guys in my first ops duty in Thailand had been in B-66 bomb-droppers in France earlier in his career. He wasn't an EWO. Makes me wonder if the crew make-up was pilot, nav-bomb, and EWO in the bombers. For sure there wouild have been an EWO in the EB's. I suspect that this post is bs of somekind. No FE in B-47 or B-52. "Unlike...the Destroyer was not used as a bomber in Vietnam..." according to Wikapedia.