De Attendees News Today

>> we have a good sense now. sunday we can pinpoint it with more accuracy. youre right. >> bret: thank you. weather is one element to convention preparation. correspondent shannon bream is looking at some of the others in tampa. >> reporter: putting together an event the size of the republican national convention is a massive undertaking. in 2012 there is one uninvited guests, organizers and de attendees are hope willing not show up. tropical storm isaac that could develop to hurricane and crash...