Article Photos: FBI: Strong signs border death was friendly fire 5/7

  Border Patrol Agents and Secretary of Homeland Security Janet Napolitano's security detail stand guard outside the Brian A. Terry Border Patrol Station outside in Bisbee, Ariz. on Friday, Oct. 5, 2012. A preliminary investigation has found friendly fire likely was to blame in the shootings of two border agents along the Arizona-Mexico border, the FBI said Friday. (AP Photo/The Arizona Republic, David Wallace) MARICOPA COUNTY OUT; MAGS OUT; NO SALES