British wartime bomb forces mass German evacuation.

Sixty years ago, this was the scene over Germany.
Allied bombs tumble from the sky and onto Nazi positions.
It was part of a fearsome bombing campaign, the legacy of which reared its head on Saturday.
Officials evacuated 45,000 people from this town - Koblenz - after discovering a massive unexploded bomb in the Rhine River.
Bomb disposal experts were taking no chances with the device, which is powerful enough to potentially knock out a building block.
(SOUNDBITE) (German) BOMB DISPOSAL EXPERT, MARCO OFENSTEIN, SAYING:
"We have a British detonator, which was surrounded by water for a long time and the explosives within the detonator react with water over the time, which makes it very dangerous."
The bomb is one of these: a blockbuster.
Weighing 1,800 kilograms, they packed enough punch to knock out a factory or dam.
During the Second World War, almost 100, 000 of them were dropped on German targets, and many remain undiscovered and unexploded.
Andrew Raven, Reuters