The scoop on Monday, July 20: 5 things to know this morning

The Kuwait-born man who shot and killed five Marines in Chattanooga last week suffered from depression and fought drug and alcohol abuse, a family spokesman said. Relatives of the shooter, 24-year-old Muhammad Youssef, believe personal struggles were at the heart of his actions. Counterterrorism investigators are still interviewing Abdulazeez's acquaintances about a trip he had taken to Jordan and whether the trip influenced him at all. FBI agents are looking into all aspects of his life and have not yet found any connections to Islamic terrorist groups. Read more.

3. New Cosby transcript reveals details on his womanizing

Transcipts from a 2005-06 deposition help reveal that Bill Cosby obtained quaaludes, which he admitted he gave to young women while partying, "the same as a person would say, 'Have a drink.'" The transcripts are the only publicly available testimony he has given after accusations of drugging and sexually assaulting dozens of women. Read more.

4. Surfing champ punches shark, survives attack

Three-time world champion Mick Fanning was struck by a shark Sunday night during the televised finals of a world surfing competition in South Africa. Fanning was struck from behind and knocked into the water before he saw two fins appear. Luckily, the Australian surfer was able to defend himself and actually punched the shark in the back before a rescuer pulled him out of the water. Read more.

5. Cobb BRT plan won't reduce traffic jams, study says

A key environmental study found that Cobb County's plan to build a $500 million bus rapid transit system will not improve the U.S. 41 rush-hour traffic and may actually make congestion worse. The study, called an Environmental Assessment, was released in April and offers letter grades on a scale of A to F based on the amount of time motorists are delayed at the intersections. The highest grade of any intersections included in the assessment was a "D," meaning waits of 35-55 seconds. Read more.