That HAS to be a very fine differential by any measure! :-)
You are right about that,it is a very competitve field.
Annapolis is the heart of the Maryland State government,so the FBI agent that is head of the Annapolis field office must have special qualifications in order to protect Maryland's politically corrupt at the federal,state,and local level and their cronies in the private sector.
Years ago when I first spoke briefly to Midura, he was simply a special agent in the Baltimore FBI office.
In early 1999 I learned he had been promoted to Special Agent in Charge of the Annapolis FBI field office.