Yemeni security officer Abdulsalam Ali Abdulrahman travels to Switzerland to purchase passport forgery equipment for Islamist extremists. Abdulsalam is a section chief in Yemen’s Political Security Organization (PSO), the Yemeni equivalent of the FBI (see August 12, 2000). Abdulrahman purchases tools to forge Schengen visas, which allow their holder to travel without border controls in some European Union countries. Italian authorities investigating Abdulrahman and his associates will learn this by 2002. They will speculate that Abdulrahman is an expert forger and that he trains a militant named Mahmoud Es Sayed, a close associate of al-Qaeda second-in-command Ayman al-Zawahiri (see Before Spring 2000), in forgery. Es Sayed will travel to Italy in 2000 from Yemen, where he will begin forging documents (see Summer 2000). Abdulrahman has close ties to radical organizations and provides false documents and airline tickets to al-Qaeda members to facilitate their travels to Europe. [Vidino, 2006, pp. 223-4]