Adam Chin is an agent with the State Department's Bureau of Intelligence.
That hardly does him justice. When we first meet him, he is the Director of Asia Operations for the department and he has been around enough and seen enough that his opinion "carried some weight around the Building, even with the Secretary". With that title and prestige it would be easy to assume that he sat a big desk and directed underlings but Chin prefers to see things himself and that means getting out into the field and putting his neck on the line.