Caldwell, who interviewed for head coaching jobs with the Jets, Browns, Packers and Cardinals, previously coached the Colts to a 14-2 record in 2009 ahead of a Super Bowl loss to the Saints. In seven seasons as a head coach (three with the Colts, four with the Lions), he produced five winning seasons, four playoff appearances and an overall 112-62 record. Now 64, he will provide much-needed experience for Flores, who is in his first post as a head coach.