The houses still standing in the storm-ravaged neighborhoods of Florida’s Panhandle are conspicuous for their presence. Sticking up from the rubble like one remaining tooth in a jawful of decay, each one is a haunting reminder of what used to exist around it. In many cases, they were saved by additional strategically placed nails, some small metal connectors and window shutters that created a sealed package — low-cost reinforcements that determined whose home survived and whose was destroyed by the power of Hurricane Michael.