The US Air Force is set to reveal what it calls the "most advanced military aircraft ever" this week.
The B-21 Raider is a stealth aircraft that can be used for long-range conventional and nuclear missions.
"The B-21 is the most advanced military aircraft ever built and is a product of pioneering innovation and technological excellence," Doug Young, sector vice president and general manager at Northrop Grumman Aeronautics Systems said in a statement.
"The Raider showcases the dedication and skills of the thousands of people working every day to deliver this aircraft."

According to Fox News the aircraft will cost around US$2 billion each.
The aircraft will be unveiled at an invite only event on Saturday NZ time.
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