Hypersonic technology needs to be cost-effective and mixed with other systems to be a useful tool in the Air Force's arsenal, service Secretary Frank Kendall said today. At a Mitchell Institute event, Kendall highlighted his considerations for hypersonic programs -- particularly when dealing with near-peer adversaries such as China and Russia. “Whether it’s by ships across the strait to Taiwan or vehicles rolling into Ukraine, we want weapons that can deal with moving targets,” Kendall said. “The earlier versions of...