This is something I've thought about more than once:
Lance Cpl. Jacob Adams was in 5th grade math class when hijacked jetliners slammed into the World Trade Center and the Pentagon. His parents took him out of school early that day.
Adams, 20, is now serving in a Marine battalion battling Taliban gunmen, many of whom were also just kids on Sept. 11, 2001. He's part of a new generation of U.S. troops inheriting the wars spawned by the terror attacks.