Or ... near National Guard posts. For my 'classic era' campaign, I worked up the equipment near Santa Rosa, California as an example:
579th Engineer Battalion
* 579th Headquarters Support Company (Santa Rosa): about 30 M998 Humvees, couple dozen big trucks (including some M809 five-ton trucks), dozen or so cranes and other construction stuff, M728 CEV on display
* 579th Forward Support Company (Santa Rosa): shelter, food, utilities, and a couple dozen trucks
* 132nd Engineer Company (Mount Shasta and Eureka): multi-role bridge building; lots of trucks, construction vehicles, a couple dozen M998 Humvees or M151 Mutts
* 120th Engineer Detachment (Lakeport, on Clear Lake): concrete finishing; two big flatbed trailer trucks, truck with lowbed trailer for carrying equipment, one other truck, plus a couple of M998 Humvees or M151 "mutts"
On October 17, 1989, the 579th mobilized in response to the Loma Prieta Earthquake. The first mission was the construction of a parking lot for the Bay Bridge commuter ferry and the second was to assist in debris clearing and removal in the Santa Cruz area. They had just returned from those tasks and had not entirely demobilized when World War III took place.
Of course, nothing says all this stuff will be sitting around undisturbed 5 years after an Atomic War (let alone 150 years).
There's also the Sierra Army Depot, which has held hundreds or thousands of "the previous generation" of tanks in storage. M60s before the M1 came around, and now has the older M1 tanks.
http://security.blogs.cnn.com/2012/1...-but-no-tanks/
Of course, it's on the target list, but it's a huge, sprawling base.
--
Michael B.