Howdy falee,
According to Wikipedia:
has statutory powers of arrest, or apprehension under section 807(b) of title 10, United States Code (article 7(b) of the Uniform Code of Military Justice);
While on AD I worked for an Absentee Collection Unit ( ACU ) and I did have the power to "arrest and/or apprehend" deserters. I arrest and apprehended deserters in +25 states and two foreign countries ( Italy and Brazil ) and I have had ZERO luck getting any type of paperwork from Uncle Sam that would allow me to CCW under the Law Enforcement Officers Safety Act.
I also worked for the State of Arkansas and Texas where I carried a gun and a badge, plus for Uncle Sam as a contractor and still have not had any luck getting the proper paperwork.
Some of this is due to the fact that this happened over twenty years ago.
Paul