Cheris had been moving down the jagged line of upended train cars, pulling as many people as she could away from unstable warped metal or encroaching flames, the backpack light on her shoulder a signal through the smoke. She waves back at the man with... a book and a cat? and mentally takes note of the air masks she's salvaged in case either needed treatment for smoke inhalation.

By now, she's met enough confused passengers to understand that her experience here is not unique. "I don't know," she calls back, muffled slightly by her own protective mask. "I woke up on this train with no idea why. Are you all right?"