Daria Gibron is a freelance agent.
She used to work for Shin-Bet, the Israeli internal security organization, and she was very, very good at it. Now, for some quite good reasons, she is not. As we are told in the description of one of her adventures:
"A former Shin-Bet agent now in exile in the U.S. and under the protection of the F.B.I., she works primarily as an interpreter. But Daria is a thrill junkie who can't resist the occasional freelance job as an operative—a habit that has left her with a trail of corpses behind her, and a few still living, very dangerous, high-powered enemies who would stop at nothing to get revenge." As a translator, she was in constant demand. "The FBI had had no trouble getting her work in the United States: she spoke fluent English, French, High Arabic, Hebrew, and Spanish, with a smattering of German and Italian. There were a thousand corporations in the financial district alone that could use an instant translator." Add to that the fact that she was extremely good looking and in fantastic shape and thus someone quite pleasant to watch doing the translating.
In regards to taking a simple job as an interpreter, she took the gig because "The work had been easy enough, the negotiations simple and the vodka martini dry."
However, continuing on the being a thrill junkie, Ray Calbrese, who "was Daria's handler, and had been since she'd been smuggled into the States.", tells one of his superiors regarding Gibron, "My report said she has an addictive personality. She smokes too much, drinks too much. She works too hard and plays too hard. She doesn't jog, she runs marathons. She doesn't do calisthenics, she kickboxes at a competitive level. If she's addicted to anything, it's adrenaline."
That led her, with Calbrese's okay and somewhat help, to help out the ATF now and then. "ATF first came to [Calbrese] with this scheme. But it seemed that Daria - in her past life - had built quite a legend as a gunrunner. And apparently she'd offered to pick up her old 'bad' habits for the feds." Now when bad guys come to her for illegal weapons, she provides them with brand new items which are pleasing to the buyers but which have been tagged and recorded by the government.
Gibron is kept very busy with her translation work and her side job of arms dealer but she still greatly suffers for the action which brought into the States from Israel. Calbrese once told her that "[she] did a good thing for your country and for ours. You saved a lot of lives and you were injured in the process." to which she retorted, "My life ended when I betrayed my government....My life ended and I have the bullet wounds to prove it, Agent Calabrese. Get on with my life? What life?"
Interesting comment about her looks:
"She'd spent lots of money to give her hair that poorly cut, haphazard look, very short in back, much longer in front, which looked as good in a boardroom or business luncheon as it did on the dance floor."