Gifted writer and reporter Robert Poole opens Section 60: Arlington National Cemetery with preparations for Memorial Day when thousands of families come to visit those buried in the 624-acre cemetery, legions of Rolling Thunder motorcyclists patrol the streets with fluttering POW flags, and service members place miniature flags before each of Arlington's graves. Section 60, where many of those killed in Iraq and Afghanistan have been laid to rest alongside service members from earlier wars, is a fourteen-acre plot that looms far larger in the minds and hearts of Americans. It...