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She’s nicknamed " Spartan ."

The second B-21 Raider stealth bomber fittingly flew on Sept. 11, from its factory in the high desert of Palmdale, California, to adjacent Edwards Air Force Base .

The B-21 Raider is the most sophisticated bomber in the world, and America’s first "sixth-generation" stealth warplane. Two more sixth-gen planes, the Air Force’s F-47 fighter, and a secret carrier-based fighter for the Navy, are also in the works. However, with the flight of Spartan coming on top of continued flight tests of the first B-21 "Cerberus," the Air Force bomber is making astonishing progress.

Nicknames from the men and women of the production line and flight test teams tell you how special these mammoth bombers are.

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