Northrop Grumman, US Air Force Reveal New Images of B-21 Raider Nuclear Stealth Bomber as Engine Test Runs Start Northrop Grumman and the US Air Force have released new images of the B-21 Raider stealth bomber as it starts ground engine runs at Northrop Grumman's Palmdale, California, facility. by Jace Dela Cruz
Tech US Air Force to Present B-21 Raider, World's Most Advanced Strike Aircraft With Stealth Technology by Joseph Henry