Halloween, as they remain in place in the event partyers need assistance, Boone expresses disapproval of the homosexual community, leading to Tyler telling Boone that he himself is gay. When Tyler and Boone respond to an ambulance crash in which Nancy and Glenn are among the victims, Boone insists Tyler follow accepted triage protocol and attend to the most injured first. Because this involves his friends and colleagues, he feels guilty about his decision, but receives praise from his superiors for doing the right thing. Anastasia Griffith as Nancy Carnahan: Nancy, a medical school graduate turned paramedic, was originally paired with Terry Banner, a partner with whom she was having an in-work relationship when they responded to an electrocution on a rooftop. The easy run turned tragic when the rescue helicopter was destroyed in a tragic accident, costing Terry and the pilot, Asher "Rotor" Reynolds, their lives. The scenes depicting the event which took place one year previous are shown on the show's pilot episode. Her partner after Terry was Sam Bailey, who only appeared in the present-day scenes in the pilot. In episode two, Nancy is paired with a new EMT, Glenn Morrison, and exhibits her unacknowledged post traumatic stress disorder (PTSD) by her many one night stands. Nancy constantly teases and makes fun of Glenn for being a newbie, as does the rest of the team. The entire team made bets on how long it would take for Nancy to sleep with Glenn but their relationship has remained platonic. Nancy and Reuben "Rabbit" Palchuck are very close. Their relationship was strained when Reuben survived the crash that killed Terry, but while treating victims of a shooting rampage Rabbit takes a bullet for Nancy after she refuses to allow the shooter to kill one of the injured. Aimee Garcia as Marisa Benez: One year after the fatal helicopter accident, young military veteran Marisa joins the SFFD as the pilot of the rescue helicopter where she is partnered with Reuben "Rabbit" Palchuck. Rabbit's rule-bending and often comedic style differs from her stern by-the-book way of working but she eventually learns to tolerate Rabbit's actions. Kevin Rankin as Tyler Briggs: Tyler and his partner Cameron Boone enjoy a good working relationship although they constantly bicker on a daily basis. Tyler was also a survivor of the fatal helicopter crash one year ago that killed EMT Terry Banner. Tyler still respects Terry's