Authorities across the country are on high alert this Independence Day, ramping up security on the ground, in the air and along the waterways.

The "Reservoir Dogs" and "Kill Bill" actor was found unresponsive Thursday morning at his home in Malibu, California, and is believed to have died of cardiac arrest, his publicist told ABC News.

Jennette McCurdy's Memoir 'I'm Glad My Mom Died' Is Being Adapted for TV, Starring Jennifer Aniston Brad Pitt hints at F1 ...