"Bill Shatzer" wrote in message
...

Mach 3 and 80,000 feet is no longer required. The satellites and UAVs/RPVs
are more than adequate.

Theoretically a UAV/RPV could fly within those parameters if it was built to
do so, and you wouldn't have to muck with the weight and duration issues of
human life support. Altitude isn't necessary but the speed at which an
aircraft can get to a target must have tactical value.

I can't imagine that such an aircraft isn't being developed already.

-c