Syed Rizwan Farook and his wife Tashfeen Malik killed 14 people and wounded 17 others at an office holiday party at a San Bernardino conference center on Wednesday morning. Then they fled. Hours later, they both died in a gunfight with police on the streets of San Bernardino. Now questions remain about who they were and why they carried out this massacre. In this video, San Bernardino Police Chief Jarrod Burguan describes what he knows about the shooters.
