Only a few dozen flights are scheduled on the departure board in an empty terminal at Munich airport as strike action grounds thousands of flights in Germany after the service sector union called on workers to walk out for better pay. "So it has an impact -- you can see it in the air traffic, it is relatively quiet here," says Yvonne Goetz, secretary of the Verdi trade union at Munich airport, adding that the aim is "to send a very clear signal that an offer must be made by the third negotiation date." IMAGES AND SOUNDBITES