says the response to north korea will be firm after the north fired dozens of rounds of artillery on to a south korean island. seral houses reportedly erupted into flames and residents rushed to evacuate. south korean tv showed plumes of smoke rising above the island, home to over 1,000 people. there are unconfirmed reports that at least one south korean marine was killed and others injured. the latest round of shelling appears to have stopped. the incident prompted south korea to scramble fighter jets. this comes amid already increased intentions over the north s claim that it has a new uranium enrichment facility. here at home as travelers pack their suitcases, tough security officials are largely sticking by airport screening methods. steve handelsman reports. reporter: with a peak travel day looming wednesday, the tsa said it will pick fewer passengers for pat-downs, hoping travelers do not protest by the refusing body scans and demanding time consuming physical inspe