When a Claymore is sent "on missions", or on the day of a Claymore's "inauguration", every Claymore is given a unique symbol to identify her. This symbol is used in three places: * on the forte of her sword blade * on the throat of her uniform * on a Black Card, which is kept rolled-up inside the sword hilt When a Claymore discovers herself in danger of Awakening, she sends her card to another Claymore, usually a trusted friend. The recipient rendezvous with the sender at a private locale. Then, the recipient euthanizes the sender.