While the two presidential candidates, Senators John McCain and Barack Obama, prepare for their second debate on Oct. 7 at Belmont University in Nashville, Tom Brokaw gets to sift through questions submitted by you. In addition to queries from a group randomly selected by the Gallup organization, Brokaw will be fielding questions submitted online at mydebates.org, the site created by the Commission on Presidential Debates and Myspace. The focus of the town hall-style debate will be domestic and foreign policy, Brokaw's specialties.