Tony Dungy is stepping down as head coach of the Colts, at least that's what he's telling those inside the team headquarters, sources told FOXSports.com. While the team has scheduled a 5 p.m. press conference, Dungy is walking around the team's complex saying goodbye to players and team employees and informing them that the transition should be a smooth one for new coach Jim Caldwell. According to one source, Dungy explained that he has talked it over with his family and they believed this was the proper time to step down, while the Colts nucleus was still intact.