The other loiterer was clad only in jeans and a T-shirt, which made him underdressed for the weather. He went over to a beat-up old van parked in front of the building. He opened the rear cargo doors, leaned in, and then heaved a long object onto his shoulder. He backed away and kicked the van’s doors shut. The object on his shoulder was a box about four feet in length and maybe a foot square, bearing the logo of the big home improvement store down the street, and labeled CONTRACTOR’S PLASTIC 6 MIL POLYETHYLENE SHEETING . He carried it into the bay and pulled the front door closed behind him.