The technology is called TREDD, which stands for "Transit Enhanced Detection Dog." It takes the idea of the bomb-sniffing dog to ... system as they gather new intel. "We had time to upgrade ...

Six-year-old Zorro, a German Shorthaired Pointer is a TSA bomb-sniffing dog. He works solely at PHL sniffing through crowds of people in line at security checkpoints. "We don't physically touch ...