Northrop Grumman said this week that the B-21 began ground test engine runs (Northrop Grumman Photo)
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First flight of the Northrop Grumman [NOC] B-21 Raider is still a go for this year, the U.S. Air Force and Northrop Grumman said on Sept. 13.
Six B-21s have been in final assembly at Northrop Grumman’s Plant 42 in Palmdale, Calif. The company said this week…
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