The term "Unsub" is short for "Unknown Subject", or a suspect that hasn't yet been identified.
In Bones they FBI agents call the scientists Squints and the phycologist a Shrink.
They call them squints
In criminal justice, and unsub is an unknown subject. This person is believed to be the source of criminal activity, and evidence ties a crime or multiple crimes to this one person. The term is often used on the show Criminal Minds to refer to a serial killer who the FBI is learning about but has not yet identified.
FBI Agents Association
Yes, FBI agents definitely have to go to college and earn a degree. American FBI agents typically have their masters or bachelors degree.
unsub
No the FBI agents are NOT allowed to smoke cigarettes on their job.
No, FBI Agents cannot perform marriage rites and the Agents have to get married like everyone else.
no
No.
No. All agents are "Special Agents" upon graduation from the FBI Academy at Quantico.(A "yes" answer was removed as the FBI does not, in fact, have plain "agents".)
They call them squints because according to them they "are always squinting at things" Referring to bones and other small things the agents don't understand.