If you have the link for the AS Freeware page, you'll find the C-5 available. Also, at flightsim.com search for this file (c5aglxrd.zip), by Christoffer Peterson. One of the few freeware offerings released by Virtavia where the VC is actually clickable. I had this back in the FS9 days and flew it quite a bit.
http://www.easyfly.co.nz/Freeware/index.php?dir=/USA
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