Frans luchtruim leeg door staking

This image provided courtesy of FlightRadar24.com shows a live picture of air traffic over Europe at 4:53 a.m. EDT Thursday Sept. 23, 2010. French air traffic controllers joined strikers protesting reforms to the pension system Thursday. Major cancellations were expected at Orly and Charles de Gaulle airports, the Paris airport authority said on its website. (AP Photo/Flightradar24.com) AP