
Amid a proliferating use of use of small unmanned aircraft and a hundreds of drone encounters at sensitive sites and with airport operations, the chairman and ranking member of the Senate Homeland Security and Governmental Affairs Committee have asked Homeland Security Secretary Jeh Johnson about his department’s efforts to address potential security threats posed by drones.Sens. Ron Johnson (R-Wis.), the committee chairman, and Tom Carper (D-Del.), the ranking member, in their letter dated Wednesday said that the Department of Homeland…