July 4: Extreme weather for July 4th. Gunman kills five in mass shooting. Shark fears after two new attacks. De Niro mourns death of grandson.

<p>Millions of Americans impacted by extreme weather across the country. Also, heavily armed gunman kills five people in Philadelphia overnight. Plus, two separate attacks have authorities on high alert for sharks. And, actor Robert De Niro’s grandson dies at the age of 19 years old.</p>