Fifty-two guests take turns filling a military father's chair at his family's dinner table while he serves his yearlong deployment. The week before Thanksgiving 2011, Dustin Smiley left for a yearlong military deployment. Soon after, his son Ford, eleven, invited Senator Susan Collins to fill his dad's chair at dinner. On January 3, 2012, Senator Collins came to dinner ... and brought brownies. So began Dinner with the Smileys,...