Cara Swisher's new podcast is called New York Magazine on with Cara Swisher. We'll bring you news and the newsmakers I'm paying attention to. Check it out twice a week on Mondays and Thursdays at 9 p.m. ET.
Sgt. David Mascarenas is the Dive Supervisor for the Los Angeles Police Department. He's been diving his whole life, and prides himself on never refusing a dive, no matter how treacherous. At least until the summer of 2013, when a murder investigation led him into the unusually murky waters of the La Brea tar pits.