The Army had planned to remove the memorial this week.
The Air Force and Northrop Grumman hope to fly the B-21 to Edwards Air Force Base later this year, barring unexpected surprises.
Mark your calendar: The U.S. Air Force plans to fly its first T-7A Red Hawk trainer halfway across the country for testing.
Engine runs on the first B-21 are underway, with tests of its fuel systems, doors, landing gear and more already complete.
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