Northrop Grumman now has five B-21 stealth bombers in production

https://www.defensenews.com/air/2021/09/20/northrop-grumman-now-has-five-b-21-stealth-bombers-in-production/

The program is making good progress, Air Force Secretary Frank Kendall said Monday.

https://peterholland765.wordpress.com/2021/09/21/northrop-grumman-now-has-five-b-21-stealth-bombers-in-production/