NY Times: Drones Spotted, but Not Halted, Raise Concerns

NY Times: Drones Spotted, but Not Halted, Raise Concerns by Michael S. Schmidt and Michael D. Shear:

As Major League Baseball’s top players took the field at the All-Star Game in Minneapolis in July, a covert radar system scanned the sky above the 40,000-seat stadium for what security experts said was an emerging threat to public safety: drones.