The firing Tuesday of longtime PA announcer Bill Couch is the latest step in what appears to be a massive overhaul of the game-day production staff. Couch said three others from that department, including producer Becky Shultz, have also been let go and more could be. Couch, the voice of the Rays since their inception at spring training and regular season games, was upset at the way his dismissal was handled and questioned whether management was headed in the right direction.