A Zipline delivery drone releases its payload midair during a flight demonstration at an undisclosed location in the San Francisco Bay Area, California, U.S., May 5, 2016. REUTERS/Stephen Lam TPX IMAGES OF THE DAY - RTX2DG2D

A drone with a camera follows Ronan Chabot of France as he drives his Toyota through the water during the Buenos Aires-Rosario prologue stage of Dakar Rally 2016 in Arrecifes, Argentina, January 2, 2016. REUTERS/Marcos Brindicci - RTX20TXF

Members of the Russian Emergencies Ministry take part in a training session, part of the preparation for Russian Orthodox Epiphany celebrations, on the suburbs of Moscow, January 13, 2016. Orthodox believers will mark Epiphany on January 19 by immersing themselves in icy waters regardless of the weather. REUTERS/Maxim Zmeyev TPX IMAGES OF THE DAY - RTX226L2

Local police officer Agustin Mirete holds a drone equipped with a camera used for surveillance tasks in front of Poniente beach at the eastern costal town of Benidorm, Spain, August 18, 2016. REUTERS/Heino Kalis - RTX2LU6H

The top of a collapsed pagoda is seen after an earthquake in Bagan, Myanmar August 25, 2016. REUTERS/Soe Zeya Tun - RTX2MYR5