Kate Edison is an agent with the CIA.
She is applying to be when we first meet her and we can follow her from her initial interviews through her indoctrination and training because it is pretty obvious that apart from her slight case of nerves that show up now and then, this is a young woman absolutely determined to make the cut.
Edison would undoubtedly make an excellent candidate. She speaks several languages. She graduated at the top of her class in both her undergrad and law school, both of which were Ivy League. Her double major had been in International Law and Diplomacy and in Journalism. She has been grooming herself specifically for a position with the Agency for the past ten years. Her father had been an agent before his death and to honor him she decided when she was 16 that she would follow that career path and everything from that point on had been with that end in mind.
Edison stands 5'9" tall and has long blonde hair. She also has a photographic memory which will definitely help.
It is at the end of her extensive training that Edison will learn about from being recruited by the AGI, or Alternate Government Initiative. This is a shadow government organization begun during the Truman Administration to "be prepared to take control only under the circumstance that our current government lost power due to nuclear fallout or any other". Initially a stratocracy, it was allowed to pull from the FBI, CIA, or any other alphabet agency for its personnel.
Though she is offered a position with them, she will do the other direction and become part of those strongly opposing them, making her very much an enemy of this AGI. The big problem she has to face, beyond the fact that they want her dead, is that one or more of the people she serves with could likely be also an AGI operative. Who do you trust when there is really no one you can?