See the competing F-47 stealth fighter jet concepts from Boeing, Lockheed, and more that led to the Air Force's NGAD

Source: Business Insider

An artist rendering of the US Air Force's sixth-generation fighter, the F-47. US Air ForceBoeing won the $20 billion contract to develop the Air Force's sixth-gen stealth fighter, the F-47. The designation is a nod to the P-47 fighter, the USAF's founding year, and the 47th president.