The United States operates more stealth aircraft than any other country on the planet, both in terms of volume and variety, with three publicly disclosed stealth platforms in service and at least three more at some stage of development.But for every F-22 Raptor, F-35 Joint Strike Fighter, or B-2 Spirit, there are a number of stealth jets that never found their way into operational hangars — either because of program cancellations or, often, because they were never intended for combat service at all. Here are 5 declassified stealth aircraft that may still be flying below your radar.