Ricky Gilleland, a tech-savvy 11th-grader, has created the only digitized record of Iraq and Afghanistan veterans laid to rest at Arlington National Cemetery.Rosemary Brown is standing over the grave of her son at Arlington National Cemetery when someone catches her eye. It's a boy in khaki shorts and muddy shoes, juggling a clunky camera and the Motorola Xoom he got for his 17th birthday five days earlier.