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US 
- US Air Force grounds B-1 bomber fleet over safety concerns CNN
- Air Force grounds B-1B bombers over ejection seat problem Business Insider
- US nuclear-capable bombers fly training mission near Russia Fox News
- Why The Pentagon Must Have The B-21 Bomber Soon, And Shouldn't Let Other Programs Slow Its Pace Forbes
- The Air Force has picked the first base to get its new, advanced B-21 Raider bomber Business Insider
- View full coverage on Google News
