'Alarming' U.S. mystery drones confound officials, scare locals

A rash of unexplained drone sightings in the skies above New Jersey has left locals rattled and sent US officials scrambling for answers.

Breathless local news reports have amplified the anxious sky-gazing and wild speculation -- interspersing blurry, dark clips from social media with irate locals calling for action.

For weeks now, the distinctive blinking lights and whirling rotors of large unmanned aerial vehicles have been spotted across the state west of New York.

But military brass...