11:00 A.M.-12:00 Noon - S1-E12
Visible crew/equipment: When Alberta is in holding room 2 with Tony, there is a camera visible to the left of the screen, behind Alberta. You can see it three times during their conversation. (00:21:50)
11:00 A.M.-12:00 Noon - S1-E12
Visible crew/equipment: When David tells his associate that he spoke to the therapist, there is a white stage light reflected in the associate's glasses. (00:10:20)
Answer: According to Jack in season 5, Nina was "deep cover" before the pair ever met, so it's safe to assume she was recruited before she joined CTU. As for what her primary mission was, who knows? Perhaps it was to gather sensitive intel and pass it on to her superiors. Given that she worked for an intelligence agency, it's not a stretch. Or perhaps we may find out in season seven.
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