Analysis of information sources in references of the Wikipedia article "Northrop Grumman B-21 Raider" in Danish language version.
B-21s would initially replace aging B-1 and B-52 bombers, and would possibly replace B-2s in the future.(Webside ikke længere tilgængelig)
The stealth B-21, the first new U.S. bomber of the 21st century, is part of an effort to replace the Air Force's aging B-52 and B-1 bombers, though it is not slated to be ready for combat use before 2025.
