Moreover, the sixth-generation fighter won't fly alone. A core concept is the use of AI-piloted drone wingmen, which the U.S. Air Force calls Collaborative Combat Aircraft (CCA).

The sixth-generation fighter jet was named the F-47 to honor the P-47 Thunderbolt, the year the U.S. Air Force was founded, and the supportive 47th president.

A $55.7 million F/A-18 Super Hornet aircraft was shot down over the Red Sea in an apparent case of friendly fire, CENTCOM said in a statement.