Arlington National Cemetery’s current system of burial records is a hodgepodge of paper index cards, digital data and scanned images. To create the cemetery’s first unified database, the Army is deploying soldiers equipped with iPhones. They’re photographing each and every headstone on the cemetery grounds. And analysts are combining those photos with existing records to create Arlington’s first authoritative data source for burial sites. The first phase of the project is expected to be finished in October.