[neurotech1]

A significant part of the US heavy lift into Afghanistan was flown in Russian owned and operated An-124 cargo aircraft.

Participation in CRAF program has been voluntary (& fairly profitable) for the airlines. CRAF was activated twice, as part of Gulf War (1991) & Iraqi Freedom (2003). If the USAF was concerned about airlines "foreign control" during wartime, they'd go to the boneyard and grab extra C-5s and standard 747/767 passenger and freighter aircraft.

There are dozens of large aircraft in the boneyard that could be made serviceable in less 48-72 hours if rushed back to service. The aircraft may require heavy maintenance to stay in service long term, but still safe for short term operations. The downside is the USAF would have to pay for for the aircraft maintenance, whereas CRAF maintenance is paid by the operator.