jon: right now unprecedented security preparations well underway ahead of super bowl xlvi. one of the big problems facing indianapolis security officials? flying manhole could have verse. no, we're not kidding. utility cables underground caused a series of explosions there, dating back to 2005. the most recent occurred in november. it damaged a parked car and raises overall safety concerns about super bowl fans. with us indianapolis public safety director frank straub. you think you have the flying manhole covers under control, first of all? >> good morning, yes. i hope so. that is really a weather-related issue typically. what you have is, when we have to put salt down and this happens in communities, i'm originally from the northeast, all over the country. when you put salt down, sometimes it leaks down