We had something similar 25 years ago. Actually two systems. One was an underwater hypersonic torpedo. The other was “Manta”, an underwater flying wing with weapon systems controlled remotely for payload delivery. It also has the capability to deliver a limited number of personnel in complete stealth for pin point operations. We are still ahead of them technologically, the only problem I see now is I fear our command structure does not have the stomach or the balls to commence a first strike or even mount a response to an attack by enemy forces. The politics of the day may get us all killed.