dpb wrote:

Possibly, but I think they tend to bring their own fuel reserves
rather than relying on local supplies except for very unusual
circumstances, at least in the very short term.

In Israel, EVERY gas station is required to have a humongous storage
capability for exclusive use of the IDF (Israeli Defense Force).*

That probably wouldn't work as an emergency FEMA source in areas susceptible
to hurricanes - the gas might sit there for several years.

Old gas is not a problem in Israel, as tanks are forever going to and fro.
There's usually a line of APCs and tanks at stations that give double green
stamps on Thursdays.

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Israel can fight a sustained war on three fronts, without significant
re-supply, for thirty days. The greatest supply endurance of NATO facing the
Soviets was ten days.