'Threat from above': Prisons face escalating threat from drones

Two years ago, some health care professionals across the country began to receive calls from individuals they believed were law enforcement, requesting that they pay a fine for failing to appear in court. "Hello, this is Sergeant Christopher with the Pottawattamie County Sheriff's Office," one call said. "I have some legal documents that require immediate attention. So at your earliest convenience, contact me back." The calls were not from law enforcement but were from scammers -- primarily targeting women health care professionals. The multistate fraud scheme, announced by officials in Iowa, was run by an inmate in a Georgia prison who ran a call center using phones delivered by drones . "We were able to trace this all back to a person inside of the Calhoun State Prison in Georgia who was