Born in Los Angeles, California, USA. Father is a doctor, mother a lawyer. No siblings. Amateur gymnast, competing in west coast regional championships 1987-88. Attended UCLA University 1989-92, graduated with a BA in Psychology. Joined Los Angeles Police department in 1992, transferred to Metro Division S.W.A.T Team in 1994, where she specialized in surveillance and negotiation. Awarded commendation for bravery for role in ending the New Millennia occupation of L.A. city hall in 1999. Woo is an expert on reconnaissance and surveillance. She can move quickly and quietly through terrorist-controlled areas and is well-versed in the installation and removal of a wide variety of electronic intelligence-gathering devices. She handles command well, but she has an independent nature and has been known to argue with her superiors. Her combat skills are average. Outspoken and self-reliant.