FBI: We have flown drones inside the US 10 times

In a letter [PDF] to Sen. Rand Paul (R-KY) this week, the FBI disclosed that it has flown drones inside U.S. airspace 10 times since 2006. FBI director of legislative affairs Stephen Kelly said that the agency uses drones in "very limited circumstances" for aerial surveillance, and they're not armed. "Eight of the times the FBI used drones were for criminal cases and two of the times were for national security." [The Hill's Hillicon Valley]