FBI: Strong signs border death was friendly fire - Article Photos 6/7

A helicopter believed to be carrying Homeland Security Secretary Janet Napolitano takes off from 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