Sorry but your wrong also. Sitting at OpaLocka Coast Guard Base are 8 MDs awaiting to be cut up for spare parts and scrap metal, 2 NWest,2Tigers,2 airlux and so on saw them there today going to the BX at OpaLocka ( NW part of Miami )
There's no way the USAF would use the MD-11 for tankers considering that the tools to build it no longer exist and only a few frames are available anyway. If they wanted to supplement the KC-10 fleet, a 777F based tanker would be better. All 777F based tankers would be new build and identically configured.