Hi Alea
Our messages crossed in the ether, as it were, or I would have explained myself after seeing your list of DOD personnel. There are many more nodes on the DOD network than just people in the Armed Services. For example, each weapons system that is computer controlled will need to be locked down. Thus, each tank, airplane, helicopter, artillery system, air defense system, ship, drone etc. will be a "seat" of ERAS. They may also choose to lock down any computer controlled base infrastructure such as power supply, water supply, etc. Basically, any point of entry for a hacker will be walled off- and we know that things like printers have been used as points from which to spoof defenses to gain entry to networks.
Additionally, your DOD list leaves off the ranks of the reserves, who will have to be equipped with the same systems as the current active duty troops (and their systems also). Finally, the DOD has many individual civilian contractors working for it at the Pentagon and in many other locations.
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