[little jeremiah]

What does “Private Military Activity” even mean?

[Publius]

I suspect it refers to private militias not under the control of a state government or the federal government.

[Watchdog85]

https://www.congress.gov/118/bills/s3589/BILLS-118s3589is.xml#H75249E0730824054A1BF9B33B5A5A171

Here is the Bill text. I think they are worried about citizen arrests or reprisals.