I think the United States Air Force has one or two, but they call them KC-10s...
I know, I know. The German and French airlines also have a fondness for them, too.
The USAF had 60 KC-10's delivered back in the early 1980's. One of them was destroyed, so now they just have 59. All of them will be retrofitted with the same 2 man cockpit used in the MD-11 and that were installed in all of the DC-10's in FedEx's fleet. DC-10's that have been retrofitted with the new 2 man cockpit are redesignated as MD-10's.