Paris Air Show

Visitiors to the  Paris Air Show are reflected in the helmet visor worn by French Lieutenant Romain of the 1st Combat Helicopter Regiment.

Francois Mori/Reuters

Visitors to the Paris Air Show are reflected in the helmet visor worn by the French Lieutenant Romain of the 1st Combat Helicopter Regiment.

French President Francois Hollande, center, exits an helicopter during his visit to the international Paris Air Show at Le Bourget airport, north of Paris, France, Friday June 21, 2013. (AP Photo/Ian Langsdon, Pool)

Ian Langsdon/AP

French President Fran├žois Hollande (centre) disembarks from a helicopter during his visit to the international Paris air show at Le Bourget airport, north of Paris, France on Friday