The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Stars and Stripes (12 Sept 2025): 'A second B-21 Raider test aircraft takes off Sept. 11, 2025, from Palmdale' and 'landed at Edwards Air Force Base, Calif., on Thursday'.
Records the first B-21 flight on 10 November 2023, the second aircraft's maiden flight on 11 September 2025 and KC-135 refuelling photos released in April 2026; the bomber is to carry the LRSO nuclear cruise missile and B61 bombs.[1]
Same-day report of the second B-21's flight from Palmdale to Edwards.[1]
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