In the second novel based on Ubisofts bestselling game, National Security Agency special operative Sam Fisher has been given license to spy, steal, destroy, and assassinate to protect America as part of a top-secret initiative called Third Echelon. Original. nAs part of a top-secret initiative called Third Echelon, National Security Agency special operative Sam Fisher has been given license to spy, steal, destroy, and assassinate to protect America. And he does...