“It’s detectable. Until it’s not.” This is how Northrop Grumman describes a new heavy nuclear bomber it’s working on, the B-21 Raider. In the pipeline ever since 2014, the deadly wing-shaped airplane is quickly moving toward operational status, as it was revealed this week. During the Air Force Association’s Air, Space and Cyber Conference held in Maryland earlier this week, the new Secretary of the Air Force, Frank Kendall, revealed the fact that there are now “five test… – Autoevolution Photo: Northrop Grumman