RENO, Nev. (AP) - Federal agents working undercover at gun shows in Nevada the past year have arrested 14 suspects on a variety of firearms charges that include illegally possessing machine guns and explosives, agents said Friday. The FBI, Bureau of Alcohol, Tobacco, Firearms and Explosives and local law enforcement agencies joined to apprehend the 13 men and one woman in five Western states - Nevada, California, Utah, Idaho and Washington - as part of "Operation Over the Line." Nine of the suspects were arrested after search warrants were served Friday, and five others already were in custody as part...