Douglas B-66 Destroyer airplane model. Based on a year-old proposal by Douglas, the Air Force in 1952 bought the Navy's yet-to-be-flown A3D-1 Sky Warrior. Hurriedly, and in keeping with the mood of the time, exacting requirements were levied which, in view of the program's urgency, proved totally unrealistic. The future B/RB-66 Destroyers, as the Air Force versions of the Navy aircraft were designated, had to be fast, highly maneuverable, and able to perform in all types of weather, at very high or low altitudes, and from makeshift or short runways. The B/RB-66s also had to have a 1,000-nautical mile radius and be large enough to accommodate a 10,000-pound payload of either atomic, conventional, or photographic flash bombs. The bomber and reconnaissance versions were to be kept closely alike. Finally, and of great importance, all versions were to be fitted with sophisticated electronic countermeasures components to deal with enemy radars.