Commander Danvers

Commander Lana Danvers is a Rivet City security guard and Harkness's second in command. She can often be found on the 2nd or 3rd level of the tower or in the Rivet City Marketplace after the Marketplace is closed

If Harkness can no longer fill that role, she becomes the chief of security and takes his place in the Rivet City Ruling Council.

She is the daughter of the founding Rivet City Council member Brad Danvers.

Related quests
You may need to speak with her to complete the Council Seat quest involving Bannon and Seagrave Holmes. If you kill her you may not be able to complete the unmarked quest.

Bugs

 * If during the Replicated Man quest you sided with Harkness, asked if you could kill Dr. Zimmer yourself, then told Dr. Zimmer about Harkness to get both rewards (then killed Dr. Zimmer) Lana Danvers believes she is the Chief of security, although Harkness still is too.