Essential California: The future of self-driving cars

It is Monday, July 4. Celebrate Independence Day with a fireworks display. Here's what else is happening in the Golden State: For the men and women who lived through the Dec. 2 terrorist attack in San Bernardino, there is no closure. Fighting off the horror of that event is a daily struggle, they say. "They were living through their own trauma of a terrorist attack when another one, in Orlando, brought back fresh memories of the bloodshed they endured. And the world's attention shifted again."