Farnborough Airshow has kicked off with the usual impressive aerial acrobatics in the southern town of England, but government budgets are a cause of concern for the exhibitors.
While defence companies can re-create realistic flying situations, they cannot simulate good business conditions, and these are worrying times for some of the world's biggest weapons makers.
Wealthy Middle Eastern and Asian countries are taking up some of the slack left by dwindling US and European defence budgets, but the fight for international business will only intensify over the coming years.
Al Jazeera's Rory Challands reports from Farnborough, southern England.
Source: Al Jazeera