Task: Question Answering
Input (English): Passage: On March 19, 2003, Iraqi General Mohammed Al-Rawi flees his residence amid the bombardment of Baghdad. Before leaving the compound, he passes a notebook to his aide Seyyed, instructing him to warn his officers to get to their safehouses and wait for his signal.
Four weeks later, U.S. Army Chief Warrant Officer Roy Miller and his platoon check a warehouse for Iraqi weapons of mass destruction. To Miller's surprise, the warehouse has not been secured, with looters making their way in and out, as soldiers from the 101st Airborne Division are too few to do much. After a firefight with a sniper, Miller finds that the warehouse is empty, the third consecutive time an official mission has led to a dead end. Later, at a debriefing, Miller brings up the point that the majority of the intel given to him is inaccurate and anonymous. High-ranking officials quickly dismiss his concerns. Afterward, CIA agent Martin Brown tells him that the next place he is to search was inspected by a UN team two months prior and that it too has been confirmed empty.
Meanwhile, U.S. Department of Defense official Clark Poundstone welcomes returning Iraqi exile politician Ahmed Zubaidi at the airport. There Poundstone is questioned by Wall Street Journal reporter Lawrie Dayne. She says she needs to speak directly to "Magellan", but Poundstone brushes her off. 
Question: What is the last name of the person that Martin Brown  tells that the next place he is to search was inspected by a UN team two months prior and that it too has been confirmed empty?
Output (English): Miller.