Teens charged with murder in deadly Colorado rock-throwing incident.

Three teenagers have been charged with murder and other counts for throwing a landscaping rock through the windshield of a car, killing the driver, Alexa Bartell, in Colorado last month. The charges include one count of first-degree murder with extreme indifference, six counts of attempted first-degree murder, three counts of second-degree assault, and three counts of attempted second-degree assault. The teens allegedly threw rocks at least seven vehicles that same night, using military or gaming terms to coordinate their attacks. Two of the teens confessed to previously throwing items at passing cars.