 Investigators have discovered two additional dogs have died at the same hotel where a pet died a few weeks ago. I'm Valerie Bonk. Taken from his owner's car, Theo the Shih Tzu is back home now. I'm Kate Ryan. Using red light cameras to keep drivers safe. I'm Scott Gellman. Good morning. It's 9 o'clock. This is CBS News on the Hour, sponsored by O'Reilly Auto Parts.