42 reactions | The US Air Force has unveiled the B-21 Raider stealth bomber. Northrop Grumman currently has six B-21 in various stages of assembly, each B-21 will cost roughly $692 million. B-21 has been designed with a new generation of stealth technology to evade radar detection. It eventually will be able to carry nuclear or conventional weapons and fly with or without pilots. | Next Generation Weapons Technology | Facebook