accident and, sadly, not unique. >> he said, well, we've seen stuff similar to this. what might happen is the operator will get into the panel with a tool for some reason and cross the leads with that tool and cause a plasma type of explosion and that could have been what happened. here, the other thing he did say is we've never seen anything this big. >> reporter: this is what the electrical box would have looked like before the explosion, about the size of a high school locker. and after the explosion, that box was nowhere to be found. all that was left was a splintered post where it once stood. hard to know what to make of that. coming up -- along with the crops, growing resentments at the farm. >> roberto told paul he was going to get my share of what my dad was going to leave me at the ranch. >> your intention was to fire him? >> yeah, it settles things. >> when "family business" continues. ues. here, it all starts with a simple...