"With the arrival of the second B-21 Raider, our flight test campaign gains substantial momentum," Air Force Secretary Troy Meink said in a statement. "With the arrival of the second B-21 Raider, our flight test campaign gains substantial momentum," Air Force Secretary Troy Meink said in a statement. "The addition of a second B-21 to the flight test program accelerates the path to fielding," Allvin said. A B-21 took flight near Edwards Air Force Base recently, the Air Force said Thursday. (Air Force )Northrop Grumman leads the program with a network of suppliers across the country, supporting thousands of jobs.