Sierra Vista is the home of Ft Huachuca, Signal Corps country.
MI Country BIG TIME its the home of the MI School.
UNITS
U.S. Army Intelligence Center and Fort Huachuca
U.S. Army Garrison
Naval Technical Training Center Detachment
U.S. Army Network Enterprise Technology Command (NETCOM)/
9th Army Signal Command
U.S. Army Electronic Proving Ground (USAEPG)
U.S. Army Information Systems Engineering Command (USAISEC)
Joint Interoperability Test Command (JITC)
Intelligence Electronic Warfare Test Directorate
11th Signal Brigade
These are just a few of the outfits here.