The FTU for the current ICBM is located at Vandenberg AFB. The GBSD is expected to replace all operational Minuteman III missiles by 2036 and is being designed to maximize the use of existing infrastructure. “The Minuteman III weapon system has been a bedrock of U.S. national security for more than five decades, but if one looks ahead to the next 50 years, the question of investing in nuclear modernization is as relevant as ever,” said Air Force Chief of Staff Gen. Charles Q. Brown, Jr. “We are fully committed to the GBSD Program of Record, which will ensure our nation’s nuclear force is ready to meet the warfighting needs of today and tomorrow.”