May 22, 2013 8:40 pm San Diegan Has Vision for Convoy Street NBC 7 reporter Mari Payton talks to Tim Nguyen and how he plans to impact the businesses of Convoy Street. US & World Videos 0:53 What are those blue blobs piling up on San Diego beaches? Velella velellas! 0:35 Blue blobs washing up on San Diego beaches again 2:52 Poway Unified fires superintendent following investigation into bullying claims 0:34 5 people injured after falling from border fence 0:53 San Diego City Council Committee approves San Diego's next police chief