[private]
[Interesting thought process. Not exactly accurate though.]
This place pulls in people from various worlds. Most of which the existence of vampires is likely truly a myth. The background of the members is as varied as the inhabitants of this facility. The common thread being the desire to protect the residents from the various risks that come from living here.
Not all of the hunters are on the defense force [There is a large YET left off and will go unnoticed for now.] but there does happen to be a majority of them that are. Hunters do not encompass the whole of the force by any measure. There are large groups of police forces, militia or just members of the facility who wish to protect it.