This is the highest security level that if publicly disclosed, would cause "exceptionally grave damage" to national security.

Even so, Mr. Freeh said of the suspected damage, "We believe it was exceptionally grave."

The reality is that this was a case of exceptionally grave crime.

And in San Francisco, the Justice Department told a federal court that public scrutiny of the operation risked "exceptionally grave harm to national security."

Under Japanese law the operator is liable for nuclear damage regardless of culpability except in cases of exceptionally grave natural disasters and insurrection.

Such material would cause "exceptionally grave damage" to national security if publicly available.

In some exceptionally grave cases however, a judge may order that a life sentence should mean life by making a "whole life order."

The government defines information as top secret if its disclosure could cause "exceptionally grave damage to the national security."

Top Secret: This applies when compromise might reasonably cause exceptionally grave injury to the national interest.

In this way they seriously undermine the only common front that has been created in the fight against the exceptionally grave threat of terrorism.