I can't access the link provided so I haven't read anything beyond what is in this thread, but it doesn't make sense to me that Fed-Ex would be interested in the C-17. The C-17 is a quite an airplane, for what it does, but the thing is, it's been optomized for carrying large, outsized loads into short, unimproved airstrips. Everything in aviation is a compromise, so the C-17's capabilities have necessarily come at the expense of other things, like efficiency, speed, payload, etc. Fed-ex doesn't have a need to carry outsized loads into small airstrips, and it would seem to me that carrying lots of small packages in cargo containers from large airport to large airport could be done a lot nore economically by the aircraft that Fed-Ex is currently using. Maybe I'm missing something.