sentences:  Owing to its expertise with both German and NATO aircraft, DaimlerChrysler Aerospace provided various upgrade packages for a wide range of aircraft, such as the McDonnell Douglas F-4 Phantom II and the Boeing E-3 Sentry.During 1993, "MiG Aircraft Support GmbH" was established with DaimlerChrysler Aerospace holding a 50% stake.The company undertook the upgrade of the German Air Force's fleet of 24 MiG-29s to NATO standards.