Newly obtained police body cam video shows the urgency of responders to the Pulse nightclub shooting last June.>> I can hear shots fired in the background.>> Harrowing scenes of the deadliest mass shooting in US history.>> Come to me, come to me, come to me, hands up, hands up.
>> The videos show officers arriving at the club.>> We probably got about 20 gunshot victims.>> Police enter the club through a shattered window and confront gunman Omar Mateen, who was holding hostages.>> Can I see your hands now?
>> Come out with your hands out or you will die!>> Twenty-nine year old Mateen, who claimed allegiance to Islamic State, was killed by police after a three hour standoff. But he killed 49 people that night and injured dozens more.>>
ease help me.>> Dmitri was a survivor.
Soon after the incident, he told 60 Minutes about a text he says he received from a friend.>> Help me, I've been shot, and I'm going into shock. Please help me.>> These videos a chilling reminder of the tragedy nearly one year on.