July 3: Severe storms and extreme holiday heat. Hunt for suspect in block party shooting. U.S. beaches on shark watch. Large crack shuts down roller coaster.

<p>Severe weather impacting millions of Americans across the country. Also, another tragic mass shooting in Baltimore over the weekend at a holiday block party. Plus, beaches on shark watch after a string of sightings and attacks. And, North Carolina roller coaster shuts down after a crack was spotted on a support pillar.</p>