After searching Ross' notes, they deduce that his source was Neal Daniels ( Colin Stinton), CIA Station Chief in Madrid, who was formerly involved in Treadstone and is actively involved in Blackbriar. Bourne, having taken Ross' bag after _he_was killed, follows the notes in his notebook to Daniels' Madrid office but finds it empty. <sep>, Pronoun: he <sep>, A: Bourne <sep>, B: Ross