Another door, and more stairs. Now he was certain he was in the midst of a pack. Through a door, down a hallway that echoed noisily with the sounds of dozens of feet. Then the procession stopped. He heard a muttering and the swipe of what could have been a magnetic pass-card. An odd security measure, he thought, in a place where an outsider would be immediately recognized as out of place. The click of an electronic lock, the opening of a door, and the pack moved him forward.