ATLANTA — Atlanta Hawks management had to spend too much of the offseason saying "We're sorry."Hawks players have a different message in training camp: "We're better." Optimism is based on improved depth and a better understanding of second-year coach Mike Budenholzer's ball-movement system. Twelve players return from last season's team that lost a tough first-round playoff series to Indiana.All-Star center Al Horford, recovering from a torn right pectoral muscle, worked in his first five-on-five drills of training camp on Wednesday.