Cherry's team constructed wooden ramps up and into the cabin, and a remote-controlled robot carefully carried the device to a nearby field. The bomb was then placed on a wooden stool; the team built an igloo of heavy timbers around the stool, covering the structure with a blue tarp held down by sandbags. Nobody was overly concerned that the bomb would detonate while it was being moved, because Kaczynski's bombs were always designed to explode when they were opened. But from this point on, the wooden structure would contain any explosion, with the blue tarp acting like a big tablecloth to capture any forensic crumbs.