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What you need to know to survive a mass shooting 02:53
What happened between San Bernardino massacre and deaths of shooters? 00:32
FBI: San Bernardino Terrorists Acted Alone 00:48
Grand jury indicts Enrique Marquez, friend of San Bernardino shooter 00:26
Enrique Marquez, San Bernardino shooter’s friend, due in court 00:32
Ex-Neighbor of San Bernardino Shooter Plotted Campus Attacks on Students 01:58
Friend of San Bernardino Shooters Appears in Court 01:18
Charges filed against childhood friend of San Bernardino shooter 02:00
FBI: ‘No Evidence’ San Bernardino Shooters Posted Pro-Jihadist Views Online 02:12
San Bernardino Shooter Posted Support for Jihad on Social Media 02:18
'I Don't Really Think About Him': San Bernardino Survivor on Attacker 00:32
Warning signs about San Bernardino shooters may have been missed 02:15
Redlands Cop Describes Gunfight with San Bernardino Attackers 01:00
Loved Ones Remember Fallen Hero of San Bernardino Shooting 01:39
FBI divers search lake for San Bernardino evidence 02:28
FBI Divers Search Lake Near San Bernardino Massacre for Clues 02:54
Cryptographer Whitfield Diffie Explains the Greatest Threats to Our Security 02:56
Investigators: Syed Rizwan Farook plotted attack in 2012, got cold feet 02:29
Victims' Families Return to Scene of San Bernardino Attack 01:22
San Bernardino shooter may have planned separate attack in 2012 02:27
Heavily-Armed Tactical Officers Going Door-to-Door Looking for Suspect At-Large 02:11 MSNBC's Jacob Soboroff is on the ground in a neighborhood authorities have swarmed in pursuit of a San Bernardino shooting suspect possibly still at large. Dec. 3, 2015
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What you need to know to survive a mass shooting 02:53
What happened between San Bernardino massacre and deaths of shooters? 00:32
FBI: San Bernardino Terrorists Acted Alone 00:48
Grand jury indicts Enrique Marquez, friend of San Bernardino shooter 00:26
Enrique Marquez, San Bernardino shooter’s friend, due in court 00:32
Ex-Neighbor of San Bernardino Shooter Plotted Campus Attacks on Students 01:58