Sunday, 05/25/03 Cub Scout crawls grave to grave, honoring the dead By HOLLY EDWARDSStaff Writer10-year-old ditches wheelchair to plant flags in front of headstonesPivoting his body with his right arm and holding a neon-green ruler in his left hand, James Milam, 10, crawled from grave to grave at Nashville National Cemetery yesterday morning, carefully placing an American flag exactly one foot from each gravestone.The energetic fourth-grader took the task seriously.''I don't think that's straight at all,'' he said, holding the ruler to a flag and making a minor adjustment. ''There, that's better.''With that pronouncement, James swung back into his...