. >> reporter: terry pettitte's daughter was inside. >> shooting at my work, people shot, in the officeng for cops. pray for us. >> reporter: a text message no parent wants to receive. >> someone had come in and started shooting. and they ran into an office and she's hiding with some other people. >> reporter: witnesses outside describing a barrage of bullets. >> i was going home, all of a sudden boom! yeah. it was like right here. >> boom, boom, boom, boom, boom! >> they said they were on the loose -- >> i walked behind the building and heard the shots. >> reporter: the gunmen firing inside a large conference room where the department of public health was holding a training session. >> all black clothing, black marchg, victims down -- >> reporter: other worried families received phone calls directly from loved ones of the horror unfolding inside. >> she just said that she was in a room. there were shooters. >> reporter: olivia navarro's daughter janelle, a case manager for special needs children, called her mother. >> have you been able to get ahold of your daughter? >> just the phone

terry pettitte reading this message from his daughter locked in an office. >> shooting at my work. people shot. in the office waiting for cops. >> reporter: but she's okay? >> pray for us. >> reporter: frank waiting anxiously for his niece. he tells me they spoke on the phone. >> she said something about three shooters with machine guns. >> reporter: she was outside when it happened on her break you said, and then what happened? >> they hit the floor and they ran inside to their manager's office and barricaded themselves. >> reporter: you seem pretty nervous right now. you're still pretty upset. but she's okay, right? >> she's okay, but i just want to comfort her. >> this man's wife got out safely. they locked themself in in her office. they seen bodies on the floor. >> reporter: glenn willwerth heard it all unfold. >> you can hear people yelling and screaming. you can see a lot of people running around. >> reporter: a triage area set up at this intersection. the injured carried away on stretchers. police escorting evacuees to school buses, s.w.a.t. teams spent hours looking for vi

. >> reporter: that's when terry pettitte got a text message from his daughter who was inside. >> shootingmy work, people shot. in the office waiting for cops. >> reporter: police rushed to the scene and helped evacuate the survivors. >> relax. i'll take a bullet before you do, that's for damn sure. >> reporter: the shooters already fled in a black suv rental. hours later police went into farook's home in the neighboring city of redlands with a search warrant. as police approach they saw that black suv on the move slowly at first then it sped away. a police chase ensued as the suv raced back towards san bernardino. with his wife behind the wheel, farook unloaded 76 rounds at officers. 23 officers returned 380 rounds back at the vehicle. when the suv came to a halt, it was riddled with bullet holes, both were killed, two officers injured. >> on their body and in the vehicle they had over 1,400 .223 caliber rounds available to them. and they had over 200 .9 millimeter rounds on their persons as well. >> reporter: police later discovered a breathtaking arsenal in the suspects' home. >> there