Officials said they now tried to make certain that threat warnings are issued only when intelligence about them is both credible and specific.

By contrast, they have published a terrorist threat warning as far as the Netherlands are concerned.

Other relatives said the government's color-coded threat warnings had made them feel anxious, not secure.

The White House said there would be no increase, for now, in the current threat warning.

It provides a structure for debates among senior officials about whether to issue public threat warnings.

It'll be the only threat warning we have now.

The harsh alarm of another threat warning made him scan his instruments.

The threat warning continued to chirp in his ear.

The Bush administration has been cautious about issuing threat warnings after so many came and went without incident late last year.

They proved to be quite successful provided that reliable and timely threat warning was given.