As a manufacturer and service provider of commercial aircraft and defense, space and security systems, Boeing serves customers spanning 150 countries. With a legacy in aerospace innovation, Boeing partners with the U.S. Air Force to continuously modernize, modify and maintain the B-1 and B-52 bombers to ensure mission readiness for decades to come. With nearly 60 years of designing and sustaining the Minuteman ICBM, Boeing is committed to keeping U.S. strategic deterrence forces safe, secure and effective and offering a capable and affordable Ground Based Strategic Deterrent.