Aug. 2002 - Michael Flocco lost his only son at the Pentagon on 9/11. Flocco, a construction worker, felt he needed to do something. So he bought and RV, moved from his native Delaware to Washington, and helped rebuild the Pentagon. But the story of Mike Flocco isn't so much about the rebuilding of the Pentagon. It is a portrait of one father’s grief and his struggle to move on.