The United States Air Force has been built to establish air superiority or air dominance over areas it finds itself operating. Today, the primary dedicated air superiority fighter jets operated by the Air Force are the F-15 (the newest being the F-15EX Strike Eagle II) and the F-22 Raptor. The F-22 Raptor is considered unrivaled in its role as an air dominance platform (even sixth-generation fighter, NGAD, may not be a replacement for it).