Shaina was a mercenary during Day 1, the sister of the assassin Mehr. After Mehr stole Max Ferraro's ID card and blew up the plane he was on, Shaina was waiting on the ground under the flight path. She set up several landing lights and waved a flare so Mehr knew where to land. After the landing, Shaina greeted her sister and took the ID card. Mehr left and Shaina burned her parachute and flight suit in a fire, before burying the ID card under some rocks.