Ahh...We were told to look for the flag of Al Qaeda (They somehow have one, you know the Flag Rule?), propaganda leaflets, cameras, cell phones with cameras, drawings of maps, notes about guard posts and security. Along with looking for suspicious activity, like taking very long porti-jon breaks (guy was caught and arrested for drawing maps and diagrams of critical areas, he had also taken notes of troop movements and patrols, he was later found to be a member of a terror group in Kuwait), one could look for persons making frequent visits and staring at a sensitive target on multiple days. It really blends counter terror ops into espionage and counter espionage skill craft. Back on topic: