CBS-11 News The Investigators FORT WORTH -- At home and off duty, Fort Worth Police Detective Scott Campbell never lets two semi-automatic Glock .45s stray far from his shooting hand. He sleeps with one, and while awake, he eats and watches television with both weapons close by. Det. Campbell's wife keeps a loaded gun close at hand too, even though she is a stay-at-home mom who cares for the couple's two young children, ages 4 and 1. Det. Campbell and his wife go to these extraordinary lengths because they and their children have been marked for assassination. A ruthless criminal...