I looked at the C-141 FAA certification here:
http://www.airweb.faa.gov/Regulatory...$FILE/a2so.pdf It is limited to 79 passengers over land because of emmergency exit requirement and only under FAR-91 and with max 9 occupants over water.
Otherwise its is a cargo only aircraft with a max of 9 occupants.
Any military contracts with that would involve cargo only, never troops. I think other civilian ramped aircraft such as the Lockheed C-130, IL-76, An-124, AN-12 etc have similar restrictions with regards to passengers, unless there is some sort of waiver I am not aware of that allows them to carry passengers for the military only.