Identifying the potential explosive. The chief says the pups will join a key piece of the layered security metro uses every day. You have to rely on the dog. Peoples lives can be at stake. Rider osar the fellow employees. Its something we take very serious. Each one of the new handlers with the k9 unit have been previously part of k9 team with the metro transit police. The second largest in the region. Reporting live, brianne carter, abc7 news. Jonathan thanks. Breaking news of a foiled bomb plot. We are just getting this in. Its coming from australia. That is where Authorities Say they arrested seven peak who were planning a seven people who were planning series of bombings in melbourne on christmas day. Its being tied to isis. Targets were train station, st. Pauls cathedral in melbourne. A series of raids in the last few hours neutralized the threat. Maureen turning to the war on terror. Virginia man is facing charges he tri isis. Federal agents arrested 26yearold Lionel Williams of