I am not quite sure what you mean by “Russia wouldn’t buy into them being in there.”
I don’t know about “black sites”, but labs were there when Russia and Ukraine separated last century. Labs are always important for any country with significant farm activity with plants and animals, for both health maintenance and disease issues. What the US might have done with them since, I also don’t know.
Further down I was glad to see information about Veterans getting some help with foreign illnesses and hazards, especially as my son just retired from over 25 years in Special Forces and other extra dangerous duties. Also, last year 2 of my grandsons enlisted in the US Army so I certainly want them to get appropriate protections.
Why would the Defense Special Weapons Agency (since renamed to something I forget at the moment) be operating 26 bio-labs for Ukrainian agriculture?
I've heard reports that Russia has published detailed information about the UKR labs, but of course it does not appear in our controlled media. It's probably in Russian media that I dare not access because of personal circumstances. If you're not me you can probably safely look for it.