The craft was multifariously designated F-22 and F/A-22 before it formally entered service in Gregorian calendar month 2005 as the F-22A. Despite its lengthy development and operational difficulties, US Air Force considers the F-22 a crucial part of its plan of action airpower. The fighter’s combination of concealment, mechanics performance, and mission systems change new air combat capabilities. The US Air Force had originally planned to shop for a complete of 750 ATFs. In 2009, the program was move 187 operational craft thanks to high prices, an absence of clear air-to-air missions throughout production, a ban on exports, and development of the a lot of versatile F-35,[N 1] with the last F-22 delivered in 2012.