Black mold is nasty stuff, but (maybe you're already aware) many military posts were also dumping grounds for a WIDE variety of serious human-made toxins.
A friend who's a former heavy equipment operator, now trying to retire, recalled coming across a stratified layering of visible whitish material where they were excavating an air-strip on post at one location that I'll abstain from specifically mentioning for his sake. Within minutes of uncovering the referenced stratified layering, the operator who was on-scene (not my friend) was ill, and vomiting.
When I worked as a civilian contractor to Uncle Sam's destruction, in a specific professional capacity, it was not incredibly uncommon at that post for reports of abandoned drums, decades old, to be found in the bush, seeping "an unknown liquid" into the streams and rivers, off post. Clearly of military origin..
A village located east of Delta Jct, Alaska and west of Tok Jct., to my past understanding, won a court settlement against Uncle re. left-over damages from bio and chemical weapons testing in that area decades earlier, and complications caused to residents years later..
The Presidio was donated by Uncle to (if I recall correctly) the City of San Francisco, and was later I.D.ed as a SuperFund site, due to contamination.
If you can afford to, or have good insurance, get tested for heavy metals, bio and/or chem weapons residuals, and any tests they can run for mold toxicity.
And, as I assume you're aware of the way Uncle functions, don't anticipate that if there was such contamination, that Uncle will be eager to cop to his criminal negligence. His M.O. is, and has been, deny, deny, deny...
But get checked, if you can. Just sayin'.
All of that aside, my understanding re. black mold, or most serious mold, is that spores can remain viable for a long time, but will not grow unless conditions are right.. including moisture.