That would be dirt on the level of when the CIA slipped LSD into innocents’ drinks in order to observe what they’d do. (The plan was outed and they were sued up the wazoo.)
The shooter was on a government research grant (about PTSD, in fact), but that’s run of the mill stuff for universities. The facts seem to say this was a plain loon, whose own mom saw him going loony.
Yet the mother didn’t have him committed.