Arturo was already waiting at the second store when the fax arrived there. Once he had it in hand, he called back to the Clerk's office to tell the lady thanks, and "It's not necessary to bring those copies back upstairs, you can just throw them away now." Then he called the manager at the first store and told him, too, to throw away their copy of the fax. This way there wouldn't be any record of what had taken place, just in case somebody later came around asking questions. Social engineers know you can never be too careful.