When headstones on the graves of fallen servicemen crack or fade with age, they're hauled away to be honorably destroyed. Then the Department of Veterans Affairs replaces them. But at veterans' cemetery in Rhode Island, an employee who was supposed to be taking care of the graves pillaged more than 150 granite headstones, many of them still inscribed with the names of the veterans. Then he took the markers home to build a floor for his carport. When investigators arrived at Kevin Maynard's house in Charlestown, R.I., this spring, they came upon an eerie scene, according to a federal affadavit:...