You could put it in the "safest" bunker and it would still be unsafe. Redundancy is key.
Like I said before, it's in MediaFire, but some people already made some mirrors and I also have backups myself in several local places (at work, in my PEN drives, dropbox, PC at home, etc).
Furthermore, as I mentioned earlier, MediaFire terms say that they only delete stuff if I don't login with some regularity AND if there are no downloads lately. Last time I checked, I login every once in a while to upload stuff and there have been downloads in nearly all my files, specially the ones NW3-related, so I am not worried.
If they change their terms later on and delete my files, I can re-upload them all elsewhere (I already did so a few times before). No host is safe from deletion, not even your HDDs at home.