Can't say much because of a lack of time, just one thought as I write out fed-ex labels to the Deptartment of the Interior's Office of the Inspector General; aka USDOI-OIG.
Just a picky spelling issue, but if you put the O in dOi for the "of" should you not then include a t for "the"? It should be DOTI. And likely should also have the o for "of" in Office of the Inspector General, OOIG or OOTIG.
Yes, I am OCD and note all inconsistencies. Hence why I wanna be a lawyer ;)