Dane County has taken some harsh criticism from the public regarding the delay, and tough questions have been raised about whether a prompt response might have saved Zimmerman's life.

CNN: Slain student called 911, but no one came in time

Acpo is now waiting to hear from police forces in England and Wales about any cases which may need revisiting - a spokesman said it expected a "prompt response".

BBC: DNA sample being taken

The IPCC said the officer was found to have downgraded the call from "emergency" to a "prompt response" and deployment of officers was not quick enough given the vulnerability of the 15-year-old girl.

BBC: Northampton

The consequences stretch from one end of the food chain to the other, as higher food prices prompt a response.

ECONOMIST: No matter how bad things get, people still need to eat

His father, a leading banker in Nigeria, warned U.S. authorities before the attack that his son might be involved with Islamic extremists, but the information failed to prompt a response such as canceling the visa.

CNN: Obama on intel system: 'This was a screw-up'

His father, a leading banker in Nigeria, had warned U.S. authorities before the attack that his son might be involved with Islamic extremists, but the information failed to prompt a response such as canceling the visa.

CNN: UK to tighten airport security after failed bombing

China declared its support for steps to stop illicit trafficking of nuclear material in what correspondents describe as an uncharacteristically prompt response to a US initiative.

BBC: NEWS | Americas | Backing for Bush on nuclear curbs

Social networks also get better as they scale, because you are diversifying the experience base of the network and increasing the likelihood that an individual prompt will spark a relevant response.

FORBES: How to Harness Your Creativity at Work

"The record, in short, is one of careful analysis at every stage, a continued commitment to research and prompt and decisive action in response to clinical-study results, " the scientists say.

FORBES: Vioxx: More Debate, More Data