I can emphatically say that the post in question was not deleted. I don't know why you would think that since you can visit the live post in question via the wayback machine link you posted.
The mention of Eglin Air Force Base is preserved too, but I don't see any connection between an Air Force base in the Florida panhandle and a unit that belongs to the GCHQ in the United Kingdom.
The mention of Eglin Air Force Base is preserved too, but I don't see any connection between an Air Force base in the Florida panhandle and a unit that belongs to the GCHQ in the United Kingdom.