ISS Fan Club

Hi, this is my first time on. I have a question.

Who directs the broadcasts of mission operations when the shuttle is docked with the ISS? Are these people reachable? I've watched some of the operations during various activities (EVA's, inside installation, ingress, egress, etc.) and have found that during some of the most interesting operations the camera controller switches to some view of absolutely nothing happening, like outside watching the end of a solar array with endless clouds in the backgrouns or some black shot with a huge bright light motionless in the center of the screen, etc., etc. Do these people need some donations of nodoze?