The Defense Department has set a fiscal year 2028 target for demonstrating a prototype hypersonic defense system to defeat long-range, ultrafast maneuvering glide vehicles during mid-flight -- more than 10 years after Congress directed the U.S. military to establish a program to plug an anticipated hole in U.S. air- and missile-defense capabilities. The Pentagon’s top weapons tester disclosed the 2028 objective in a report to Congress obtained by the Project on Government Oversight ; the Missile Defense Agency had previously...