Unauthorized drones are flying an average of twice a day above critical military infrastructure just 4 miles from the White House, according to new study from drone-detection start-up Dedrone and the Department of Defense. “This is a concerning rate,” Dedrone CEO Jorg Lamprecht told CNBC, “especially in light of international incidents where drones have crashed into other aircraft, and been used by terrorists, and used in other illicit activities.” In one recent example, the Islamic State used a

small drone to bomb an ammunition dump at a stadium in Syria, setting off a chain of explosions. And this September, a civilian drone crashed into a U.S. Army Blackhawk helicopter.  To conduct their study, Dedrone and personnel from Joint Base Myer-Henderson Hall installed drone detection systems on the roof of the National Defense University at Fort McNair. The systems picked up on 52 unwanted drone flights over 26 days during the late summer and early fall. CONTINUE