During a confidential meeting in MTAC, sensors picked up an unauthorized electronic transmissions. A bugged pen was found on SecNav Porter, who received it as a free gift in a solicitation for charity mail at home. Abby discovered that it had been actively listening for 30 hours, during which time Porter had attended three classified DOD briefings. This scenario had been predicted two years earlier by NSA Agent Eleanor "Ellie" Bishop. Gibbs decided to bring her into the investigation. It turned out that a weapons manufacturer who'd been shortlisted for the SecNav job had sent the bugged pen to Porter, in order to discredit her.
Bishop: It doesn't make any sense.
Tony: What now, Russell Crowe? Hasn't your beautiful mind gotten you in enough trouble today?
Gibbs: You forgot something.
Bishop: Ahh, that's not mine.
Gibbs: It's got your name on it.
Bishop: This is my NCIS application from years ago. Before I took the job at NSA. How did you know about this?
Gibbs: Your name sounded familiar. I went back and looked it up.
Bishop: That's why you took me along today. You play chess too.
Gibbs: I wanted to see if you're still up for a challenge.
Gibbs: I'd like to keep you around. Joint duty assignment.
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