Investigators from the US federal agency noted that mid-air collisions like this are rare in the US, and they said it was far too early to speculate on what caused the crash; however, we will look at crowded airspaces and complex issues surrounding airports. Also, economic growth in the US slowed at the end of last year, as trade and investment declined and the country was hit by hurricanes and strikes. And, shoplifting, shrinkage, the five-finger discount—whatever you call it—stealing from shops is on the rise. Here in the UK, the British Retail Consortium has told the BBC retail crime is "out of control."