Katia Loenstern (1970-2006) was an Israeli American Krav Maga class instructor who taught self-defense lessons. She had taught Krav Maga classes, with Sam Fisher being one of her students that attended. Due to his dangerous line of work, and fear of placing her at risk, Fisher tried to avoid becoming too close to Katia, merely flirting at most. After a while, however, the two became romantically involved and Katia was Fisher's girlfriend for a short time. After a coincidental meeting in Los Angelas, California, she is shot and killed by Yvan Putnik who was actually trying to kill Sam Fisher.