London Ambulance Service

Picture of the Day: Ground Zero's Angels

Motorcyclists arrive at Ground Zero, Manhattan, at the culmination of America's 9/11 Ride', an annual three-day event to honour the victims – particularly the first response rescue workers – of the World Trade Centre attacks.

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Flying doctors: a bird's eye view

For air ambulance medical crews, critical injuries and life-or-death decisions are all in a day's work. Jeremy Laurance takes to the skies with them