She Never Flew: Concepts from the X-44 Manta may have influenced the U.S. Air Force's Next Generation Air Dominance (NGAD) program, which is developing a sixth-generation fighter to replace the F-22.

X-44 MANTA: The Stealth Fighter That Could Have ... It is likely that the X-44 heavily inspired the concept for the Air Force’s Next Generation Air Dominance (NGAD) sixth-generation warplane.

The Endeavor Manta displaces just five tons of water, but CSBC hopes it can be used as a drone jammer, loitering munition, and to fire torpedoes.