let's return to john bucho, homicide department with 25 years experience in miami. thanks for being with us, i appreciate your time. as a homicide detective, what inconsistencies jump out at you? >> first, it's a pleasure to be here. as far as the facts i know about the case and this is from the media, i don't have the details from the sanford police department and the investigation. the things that jump out to me, in order to use deadly force, it has to be -- you have to believe there's imminent death or great bodily harm is going to occur to you or is occurring to you. in this case, i saw the video of mr. zimmerman coming into the police station. i don't see that on him. i don't see great bodily harm. at this point, you have to remember, he's a civilian, he's on the street, he's armed. mr. martin is there on the street also. he doesn't know what his authority is to stop him and there's a confrontation. that confrontation, i'm understanding that mr. zimmerman received a bloody nose and possibly some injuries to the back of his head. now, in any type of fight, high