The Air Force Has a Problem: It Needs Way More than 100 B-21 Stealth Bombers. Northrop Grumman’s B-21 Raider stealth bomber is rapidly approaching its critical design review Kris Osborn · October 29, 2018 Please leave this field emptyStay Updated with Warrior Maven Subscribe for daily military news and updates delivered straight to your inbox. We don’t spam! Read our privacy policy for more info. Check your inbox or spam folder to confirm your subscription.