Prototyping for the Air Force's new bunker-buster bomb has been extended by one year, according to the service's fiscal year 2027 budget request. The GBU-76 Next Generation Penetrator program will not complete prototype demonstration through modeling and simulation, design, product development and test until the end of FY-28, according to next year’s research, development, test and evaluation spending proposal . The service in its FY-26 budget request projected that prototype activities would be complete by the end of FY-27...