> Other changes likely include advanced materials used in coatings to make the bomber harder to detect, new ways to control electronic emissions, so the bomber

> Other changes likely include advanced materials used in coatings to make the bomber harder to detect, new ways to control electronic emissions, so the bomber could spoof adversary radars and disguise itself as another object, and use of new propulsion technologies, several defense analysts said. > “When we talk about low observability, it is incredibly low observability,” Warden said. “You’ll hear it, but you really won’t see it.” > Six B-21 Raiders are in production. The Air Force plans to build 100 that can deploy either nuclear weapons or conventional bombs and can be used with or without a human crew. Both the Air Force and Northrop also point to the Raider’s relatively quick development: The bomber went from contract award to debut in seven years. Other new fighter and ship programs have taken decades. > The fact that the price is not public troubles government watchdogs. > The Raider will not make its first flight until 2023. However, using advanced computing, Warden said, Northrop Grumman has been testing the Raider’s performance using a digital twin, a virtual replica of the one being unveiled. > The new Raider will also get new hangars, to accommodate the size and complexity of the bomber