French Junior minister for Higher Education and Research Genevieve Fioraso (L), French President Francois Hollande (2ndL), Economy minister Emmanuel Macron (C) and Minister for Ecology, Sustainable Development and Energy Segolene Royal (R) look at a drone flying in the gardens of the Elysee Palace after the presentation of the "34 plans for the new industrial France" in Paris September 9, 2014. REUTERS/Patrick Kovarik/Pool

Image used for illustrative purpose only. A drone is pictured flying over a mock car crash scene as Belgian police officers showcase the use of drones deployed over traffic accidents occurring on highways, in Ranst near Antwerp, Belgium, January 18, 2017. REUTERS/Francois Lenoir - RTSW2EZ

Indigenous men from several tribes look at a drone during the first World Games for Indigenous Peoples in Palmas, Brazil, October 28, 2015. REUTERS/Ueslei Marcelino - RTX1TQNA

Iraqi security forces members use a drone during a battle with Islamic State militants in the Intisar district of eastern Mosul, Iraq, January 1, 2017. REUTERS/Khalid al Mousily - RTX2X524

Drones fly in synchronization above attending conference goers as they dine outside along the ocean during the opening remarks at the beginning of the Wall Street Journal Digital Live ( WSJDLive ) conference at the Montage hotline Laguna Beach, California October 19, 2015. REUTERS/Mike Blake TPX IMAGES OF THE DAY - RTS56FB

A drone surveys a blaze sending a thick plume of smoke from a recycling plant in Sydney, Australia, February 23, 2017. REUTERS/Jason Reed - RTSZWE8

A police surveillance drone flies over a demonstration against the French labour law proposal in Paris, France, as part of a nationwide labor reform protests and strikes, April 28, 2016. REUTERS/Charles Platiau - RTX2C5BX

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

A drone operated by paramilitary police flies over the site of last week's explosions at Binhai new district in Tianjin, China, August 17, 2015. Many operations have resumed at China's Tianjin port, trade sources said, after explosions last week that killed more than 100 people and disrupted business at what is an important oil, gas and bulk import harbor for Asia's biggest economy. The explosions on Aug. 12 led to the disruption of all chemical and oil tanker discharges at the port, and imports of iron ore were also affected. REUTERS/Kim Kyung-Hoon TPX IMAGES OF THE DAY - RTX1OH1I

Photo used for illustrative purpose. Freestyle Skiing - FIS Snowboarding and Freestyle Skiing World Championships - Moguls competition - Sierra Nevada, Spain - 8/3/17 - A drone flies near Tevje Lie Andersen of Norway. REUTERS/Paul Hanna

Image used for illustrative purose. An Airspace Systems Interceptor autonomous aerial drone releases a kevlar net to capture a simulated hostile drone during a product demonstration in Castro Valley, California March 6, 2017. Picture taken March 6, 2017.

Image used for illustrative purpose. Drone flying in sky.

A flying sushi service tray known as the "itray", created using miniature remote-controlled helicopter rotor blades, is demonstrated by staff at a "Yo! Sushi" restaurant in London June 10, 2013. REUTERS/Neil Hall

Drones film Imran Khan (3rd L), chairman of Pakistan Tehreek-e-Insaf (PTI) political party, as he addresses to his supporters during the Freedom March in Lahore August 14, 2014. Thousands of protesters began to march on the Pakistani capital from the eastern city of Lahore on Thursday, buoyed by a last-minute court order that a peaceful march could go ahead and a government promise to obey the ruling. REUTERS/Akhtar Soomro

An aerial performance, featuring 100 illuminated drones, flies above the Sydney Harbour Bridge and Opera House during the Vivid Sydney light festival in Sydney, Australia, June 9, 2016. REUTERS/Jason Reed - RTSGQ3N

A drone flies past the "Dinner in the Sky" platform hanging in front of the Cinquantenaire park in Brussels, Belgium, June 5, 2015. "Dinner in the Sky" accommodates 22 guests, seated at a table suspended from a crane at a height of 40 metres (131 ft.). REUTERS/Francois Lenoir - RTX1F981

A DJI's Phantom 3 drone flies during a demonstration at their first flagship store in Shenzhen, Guangdong province, China December 20, 2015. Chinese drone developers are racking up an impressive list of aerial solutions for a growing variety of demands, from police surveillance to agricultural mapping and traffic management. Already well established as a world leader in drone manufacturing, China is slowly emerging as a world-class innovator, not just a duplicator of foreign designs. REUTERS/Tyrone Siu - RTX1ZHUC

An Autel Robotics X-Star drone with a FLIR Duo module is shown during the 2017 CES in Las Vegas, Nevada, U.S., January 6, 2017. The module is a compact dual-sensor thermal and visible light imager. REUTERS/Steve Marcus - RTX2XTCC

Jan Stumpf (L) of Ascending Technologies and Anil Nanduri of Intel control an Intel AscTec Firefly drone during a flight demonstration at the House Commerce, Manufacturing and Trade subcommittee on Capitol Hill in Washington November 19, 2015. REUTERS/Gary Cameron - RTS7ZUN

QUALITY REPEAT A golden eagle grabs a drone during a military training exercise at Mont de Marsan French Air Force base, southwestern France, February 10, 2017. REUTERS/Regis Duvignau - RTSYP5W

A man reaches out to catch a drone used to monitor rhinos in Africa to protect them from poaching during the Clinton Global Initiative's annual meeting in New York, September 28, 2015. REUTERS/Lucas Jackson - RTX1SXO8

A Russian soldier launches a drone during a joint Serbian-Russian military training exercise "Slavic Brotherhood" in the town of Kovin, near Belgrade, Serbia November 7, 2016. REUTERS/Marko Djurica - RTX2SBUA