bitten while swimming off the florida panhandle. we ll show you how to track sharks as some beaches temporarily close. crime without punishment: our cbs news investigation takes to us chicago where some murder cases are closed, even when no suspect is charged. and on the road with a birthday surprise that will help you savor what it means to be an american. this is the cbs evening news with norah o donnell, reporting from the nation s capital. garrett: good evening, everyone. thank you for joining us on this friday night. tonight the fourth of july holiday weekend is off tie hectic start as the nation matches pre-pandemic travel numbers. airlines and passengers worry about potential snarls thanks to staff shortages and larger-than-expected crowds. long lines and short tempers could ruin some independence day celebrations. airlines are urging their customers to check their flight status before heading to the airport. now, so far today, there have been more than 500 can
beachgoers saved his life. we had to quickly cut his wet suit off of him and open it all up and then try to, you know, apply the tourniquets to each limb because he was bleeding severely. reporter: for those headed to the beach, there are new apps that track shark sightings but officials say use common sense. don t dump fish into the water. use fish, use bait and all that. this causes sharks to have a feeding frenzy. always swim in a group. avoid water at night and most of all take the lifeguards introductions seriously. reporter: there were 47 shark bites in 2021, more than a 40% increase compared to the previous year. but experts still stress they are extremely rare. in fact, your chances of it happening are one in 11 million. major. garrett: throch your lifeguards. meg oliver, thank you. we want to turn now to our new investigative series crime without punishment that looks he united tes. unsolved murdered tonight we go to chicago, where even when the police say they
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