Pretty sure it was TTSA who claimed to have the materials, not the government. TTSA wanted to investigate whatever "meta materials" they had and submitted a proposal to the Army to use existing government facilities and equipment for further research.
This is a CRADA, which stands for Cooperative Research and Development Agreement. It's not a funded contract, meaning the government isn't paying TTSA any money, but they're "cooperating" and letting the "collabarator" (TTSA) use government facilities (labs and such). This is a pretty common way of government/private industry working together doing technology research.
It'll be interesting to see what they come up with, but you'll probably have to look long and deep for the information unless it's something really unique.
https://acqnotes.com/acqnote/tasks/c...ment-agreement
Didn't Luis Elizondo and several other key figures with TTSA leave the group a few months ago?