that brought seth's father-in-law, deputy todd caldwell, out to tate's house for that official visit is front porch and he was rubbing a loaded shotgun. >> seth said he knew the tenor of the visit because todd had filled him in later. his father-in-law also gave him a strong warning. >> "hey, if you're doing anything to his yard, knock it off. if your buddies are doing anything to his yard, knock it off. do not mess with this guy. he's off his rocker. he's going to be the next person -- >> sure. >> to shoot a cop. " >> and i said, "i'm not messing with him. i'll make sure nobody else is. " >> the murder weapon hadn't been found so the state agent asked seth about the firearms he kept in the trailer. maybe one of those had been used. >> do you have any guns that are missing at your house? >> i haven't looked. >> if one of those guns is used in the homicide, we want to know where it's at. >> don't you agree? >> oh, yeah. >> so i just ask him to write down the guns that are in his house. and he writes them all down. >> inevitably, the agent turned to the sharp-edged, intrusive questions