the fall of 1995, firefighters in Pleasant Garden, North Carolina responded to a call about a fire in a suburban neighborhood. When they got there, they managed to mostly put out the intense flames. At which point, they formed a line in the first-floor hallway and began moving down; looking for anyone trapped inside any of the adjacent rooms. But before they reached the end of the hallway, the floor suddenly gave out from underneath them, sending the lead firefighter down into a hidden crawlspace four feet below. The man was unhurt from the fall, but when he tried to stand up to climb...