Paris Air Show

An Airbus A380, the world's largest jetliner, generates vortex during a flying display at the 51st Paris Air Show at Le Bourget airport near Paris, June 18, 2015. REUTERS/Pascal Rossignol

An Airbus A380, the world's largest jetliner, flies over a Boeing flag while landing after a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 18, 2015. REUTERS/Pascal Rossignol

A Qatar Airways crew member presents the first class seats of an Airbus A380 aircraft during the 51st Paris Air Show at Le Bourget airport near Paris, June 17, 2015. REUTERS/Pascal Rossignol

Visitors look at a Artemis military drone on display during the 51st Paris Air Show at Le Bourget airport near Paris, June 17, 2015. REUTERS/Pascal Rossignol

A Dassault Rafale fighter participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal Rossignol

Visitors look at A H160 of Airbus Helicopter on display during the 51st Paris Air Show at Le Bourget airport near Paris, June 17, 2015. REUTERS/Pascal Rossignol

A Boeing 787-9 Dreamliner participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 17, 2015. REUTERS/Pascal Rossignol

An Airbus E-Fan.1, an electrical aircraft participates in flying display during the opening of the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal Rossignol

An Airbus A400 military aircraft participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal Rossignol

A Bombardier CS300 participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal Rossignol

A cabin crew member of Russian carrier Aeroflot poses in front of a Sukhoi Superjet 100 airplane during a photo session at the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal R

An Airbus A380, the world's largest jetliner, participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 15, 2015. REUTERS/Pascal Rossignol

A Dassault Rafale fighter participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal Rossignol

A Bombardier CS300 aicraft takes off to participate a flying display as an Airbus A380, the world's largest jetliner, waits on the taxiway during the 51st Paris Air Show at Le Bourget airport near Paris, June 15, 2015. REUTERS/Pascal Rossignol

A Dassault Rafale fighter participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal Rossignol

A Dassault Falcon 8X jet participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal Rossignol

A Boeing 787-9 Dreamliner takes off as it participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 15, 2015. REUTERS/Pascal Rossignol

An E-Fan 2.0 electrical aircraft is seen on a static display two days before the opening of the 51st Paris Air Show at Le Bourget airport near Paris June 13, 2015. REUTERS/Pascal Rossignol

A JF-17 Thunder fighter participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. Picture taken June 16, 2015. REUTERS/Pascal Rossignol

An Airbus A400M military aircraft participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 15, 2015. REUTERS/Pascal Rossignol

A Dassault Rafale fighter participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 15, 2015. REUTERS/Pascal Rossignol

A worker cleans the cockpit of a Pilatus PC-21 on a static display two days before the opening of the 51st Paris Air Show at Le Bourget airport near Paris June 13, 2015. REUTERS/Pascal Rossignol

People walk past aircrafts at the static display area in the early morning during the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal Rossignol

A man looks at a Dassault Rafale fighter C on the first day of the 51st Paris Air Show at Le Bourget airport near Paris, France June 15, 2015. REUTERS/Pascal Rossignol

A visitor walks past an aircraft at the static display area in the early morning during the 51st Paris Air Show at Le Bourget airport near Paris, June 16, 2015. REUTERS/Pascal Rossignol

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An Airbus A400M military aircraft participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 13, 2015. REUTERS/Pascal Rossignol

A Bombardier CS300 aircraft is taxied into static display after participating in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 15, 2015. REUTERS/Pascal Rossignol

Workers move a Boeing 777-300ER of China airlines airplane into a static display two days before the opening of the 51st Paris Air Show at Le Bourget airport near Paris, June 13, 2015. REUTERS/Pascal Rossig

A Bombardier CS300 airplane on a static display is reflected in a pair of sunglasses two days before the opening of the 51st Paris Air Show at Le Bourget airport near Paris June 13, 2015. REUTERS/Pascal

A Dassault Falcon 8X jet participates in a flying display during the 51st Paris Air Show at Le Bourget airport near Paris, June 15, 2015. REUTERS/Pascal Rossignol

Journalists visit the cabin of the Bombardier CS100 aircraft after a news conference one day before the opening of the 51st Paris Air Show at Le Bourget airport near Paris June 14, 2015. REUTERS/Pascal Rossigno