When the United States started developing stealth aircraft, they were seen as the logical next step in combat equipment. Planes that couldn’t be detected on radar were seen to have the advantage of being able to attack without being spotted, and this advantage was apparently deemed so great that the other characteristics of air fighter superiority seemed to be abandoned – those of speed, agility, the ability to out-turn an opponent, and to duel in close-up dogfighting. In fact, the notion of what constituted “air superiority” itself was altered in the US view.