receives the call. >> he needs backup to finish his task but it's not an emergency situation. he's got things under control. >> as callvert heads to the scene, officer seiter has otto coleman to exit his vehicle so he can perform a search. >> step on out. >> what's the problem, sir? >> step on out. >> once mr. coleman gets out of the vehicle you can kind of see him kind of looking around. it's almost like someone is looking around to see if there's any witnesses to see who is going to see what happens next. >> what happens next is frightening. >> sir turn around. >> he latched on to me. he grabbed me. the fight was on. >> i tried to retreat from him. he held me close to him. he was not fighting to get away. he was fighting to hurt me. >> coleman grabs for the officer's taser and then reaches