FLOWERY BRANCH — The Falcons have some big holes at the start of free agency. Tight end isn't one of them.Tony Gonzalez announced Tuesday he is returning for another year after his near-retirement, a move that has coach Mike Smith smiling. "I can assure you we're a lot better football team this afternoon than we were this morning," Smith said soon after Gonzalez announced on his Twitter feed he will return to the Falcons for the 2013 season.