keith bryant. bryan. >> reporter: the whole keith bryant theory that maybe they got the wrong fire chief? >> you know, that did not occur to me until i got to the hospital. and that was the first time someone had brought up a mistaken identity. >> the buzz reached roger at the firehouse. >> that story did come out, that maybe someone got the wrong chief. it could've been anyone's theory as to what had happened. >> reporter: surely the oklahoma city chief hired and fired many more people than keith did. had the shooter been angry with him? a friend reached him by phone, he was safe and sound at a conference on the east coast the night of the shooting. but there were problems with the mistaken identity theory. the two chiefs didn't look much alike, and the more keith's fireman brother thought it over, the less likely it seemed. >> i still didn't think that story made sense. >> reporter: too farfetched? >> yes. it's real competitive to get hired on as a firefighter. i can't see somebody not getting hired an