Bryn Fillmore was a Special Agent with NCIS.
Special Agent Fillmore was an interim replacement for Rebecca Hastings. Fillmore resigned from NCIS after serving on Gibbs's team. According to Fillmore, her own resignation letter took a month to craft because, she could not find the right words to describe Agents DiNozzo and McGee with some of the words being "annoying", "childish" and "Sidekick". Her place on the team was taken by Ziva David upon certification as being fit for duty.
It is not known what became of Agent Fillmore after she resigned from the team.