> The ability to fly supersonic NOE (Nap-of-the-Earth) into enemy territory without leaving a trail of very loud sonic booms seems like it would be something of

> The ability to fly supersonic NOE (Nap-of-the-Earth) into enemy territory without leaving a trail of very loud sonic booms seems like it would be something of interest. B1-B Lancer's exist to do exactly this, but are quite noisy. Wikipedia claims B-1B max speed at low altitude is Mach 0.96. High speed flight at low altitude consumes fuel like crazy due to the high density atmosphere.