invincibility complex. we know he traveled around the country, driving by himself. he was pulled over for speeding in texas. then pulled over and given a ticket for speeding in lake mary just a couple of weeks ago. and then of course last week, shellie zimmerman filed for divorce. >> shepard: he went to that manufacturer of the gun that shot and killed trayvon martin. i wonder if the police are saying he is accused of threatening his wife with the same weapon. >> according to the deputy chief, they have him in custody, investigative detention, rather, is the technical term, as they try to formulate a probable cause for an arrest. if they determine that in the next several minutes as they interview everybody, also a landscaping crew working on property nearby that apparently was also questioned about what they may have seen or heard. if they come out with probable cause, then we expect they will then take the ten-minute drive with george zimmerman in the