Ukraine's massive drone attack against Russia over the weekend is prompting the U.S. Air Force to think differently about its capability mix, favoring certain low-cost systems over exquisite ones, service Chief of Staff Gen. David Allvin said today. “The innovation within combat is growing so much more rapidly,” Allvin said during the Special Competitive Studies Project AI Expo in Washington. “It should humble us.” Over the past 18 months, Ukraine smuggled about 117 unmanned aerial systems into Russia and placed...