As the U.S. marked the somber 9/11 anniversary, the U.S. Air Force announced a major step in the ongoing nuclear and bomber modernization with the arrival of a second B-21 Raider test aircraft at Edwards Air Force Base, California—the first “sixth-generation” stealth bomber. The milestone, announced on Sept. 11, is huge progress towards the aircraft’s operational readiness. . With two Raiders now flying, testing will expand beyond basic flight performance to advanced mission systems and weapons integration trials (and hopefully lots of videos coming soon!). These tests are meant to validate the B-21’s ability to carry both conventional and nuclear payloads as the B-21 will be replacing B-1 and B-2 aircraft in the Air Force inventory. . “The arrival of the second B-21 Raider brings substantial momentum to our test campaign,” said Secretary of the Air Force Troy Meink. “We can now accelerate evaluations that directly support strategic deterrence and combat effectiveness.” . Beyond test ...