seiter radios for assistance. >> call for help! >> when you hear another law enforcement officer's radio key up and you just have plain language help, you know it's bad. i hit my lights and my sirens. i'm accelerating. your gut instinct is go, go, go. >> but time is running out as he races to the scene. coleman gains the upper hand in the fight. >> he was choking me and pushing me back over the trunk of his car. you just don't realize it. you are fighting for your life. >> as the officer struggles, backup arrives, but it's not trooper colvert. >> i saw her come around the corner of the car. >> a woman rushes into the melee and throws punches at otto coleman. now it's two against one. >> she started to distract him by hitting him on the head. >> the distraction works. >> i was able to break free enough so i could actually get some leverage and hit him. >> seiter is able to gain control of the fight. seconds later the sergeant arrives on the scene and helps finish the job. >> it's kind like tag team wrestling. it was time for me to t