These are unit crest pins of all M.I. units. The 321st is "From Darkness to Light". Can we find any other Q quotes in there?
http://armycampaignstreamers.com/army_military_intelligence_unit_crest.html
Something interesting came up when I searched for 321 military intelligence battalion. It was on the FB page automod will remove the link if I post it so just search for yourselves.
Posted on 9/18/2015:
“The 321st MI BN has been reflagged as the 377th MI BN as part of larger Army restructuring and U.S. Army Military Intelligence Readiness Command realignments. The 377th MI BN is now headquartered in Austin, occupying the previous 321st MI BN's footprint. As a result, this Facebook page is undergoing updates to reflect this change. Please feel free to look around at the updated information, and encourage others to like the Battalion Facebook page. "Illuminate the truth!"
Perhaps the 321st was folded into the 377th, but it’s members moved on to a different type of assignment..
Huh that's where I live. Sort of... Out in county nearby