TUCSON, Ariz. (AP) — Nancy Guthrie’s upscale Arizona neighborhood is quiet and mostly dark at night, lit mainly by car headlights and homes spaced far apart. Long driveways, front gates and desert plants provide a buffer from the winding streets and curious eyes. Saguaro cacti tower above the ro ofline of Guthrie's Tucson-area home, and wispy [...] ...read more read less