Mexico theory in Guthrie case raises questions as FBI says it was kept out Dave Smith, a retired lieutenant with the Arizona Department of Public Safety, says that due to the distance of just about 60 miles between Tucson and the border, the chance Nancy Guthrie was taken south is a strong possibility. NEW You can now listen to Fox News articles! Just a couple of miles from Nancy Guthrie's home in Tucson is a desert "wash," a natural drainage ditch, thick with brush so dense that one can barely