AR 27-10 (Page 108)
Chapter 20-2b
“The ARNG Soldiers are not subject to the UCMJ while in State service under 32 USC (Title 32).”
http://www.apd.army.mil/pdffiles/r27_10.pdf
Exactly...that is what I said in my post. NG members are not going to be subject to the UCMJ while in Title 32. Only in Title 10. When you are on Title 10 orders, those orders have a specific statement in there stating who the UMCJ authority is. For instance, when I was a traditional guardsman and did some Title 10 duty in Central America back in the early 90's, my orders read (I still have them): "You will be attached to the 24th Wing for the administration of military justice and other administrative actions requiring the approval by a courts-martial convening authority." The 24th Wing was at Howard AFB, Panama. I wasn't assigned to the 24th Wing...I was working with the Army...but they were the UCMJ authority.
However, each state has its OWN UCMJ. Here in Texas, the Texas UCMJ covers soldiers and airmen while they are on Title 32 status.
This SECDEF memo may supersede AR 27-10. Not sure?
UCMJ Jurisdiction Over DoD Civilian Employees, DoD Contractor Personnel, and Other Persons Serving With or Accompanying the Armed Forces Overseas During Declared War and in Contingency Operations
http://www.dtic.mil/whs/directives/corres/pdf/DTM-08-009.pdf
He's not NG, he's Reserve. That's Federal.