In Texas, probably half the force is Hispanic so I don’t think you could identify them on an ethnic basis.
I’d say it’s Muslims (Texas has a large immigrant Muslim population), possibly but not necessarily Black Muslims. The on-base attacks on military members in Iraq were carried out by Black Muslims, but I’m not sure the military still lets them in the way it used to.
However, there are lots of Iraqis and Afghanis that we have trained on US bases, as well as a scads of Saudis, so there may well be foreign Muslim jihadis who have been awaiting their moment.
Oh....my bad.
I forgot The Messiah mentioned somewhere that we have a debt to Muslims who have done so much for America, and we have lots of them here.....