The US Air Force just broke cover on its first new bomber in decades. See photos of the new B-21 Raider.

Courtesy of Northrop Grumman

The Air Force revealed the first new stealth bomber in decades on Friday.

The B-21 Raider is a sixth- generation aircraft intended to serve as the backbone of America's fleet.

The public debut of the sleek stealth bomber was held at an Air Force facility.

The last time a new US bomber was publicly unveiled was in 1988.

The first flight of the aircraft will depend on ground test outcomes.

The B-21 test aircraft are being assembled at the company's site in California.