"The Secretary is the key link during a nuclear alert," this officer said.

A description of the watershed management process and key links to help you through each step.

The $230 million, 4.1-mile bridge is seen as a key link in interstate highway system.

This key link in the oxygen cycle is necessary for much of the biodiversity present on earth.

Yet it is a key link in our new emphasis.

It was also a key link in more than one pilgrimage route.

"And if you look at a map, that is the way it looks," with Georgia as a key link in the chain.

In a Government that burned a lot of diplomatic bridges, he was, especially at the end, a key link to the outside world.

They stood before the north gate of the town - the key link between castle and community.

His death took with it a key link between the factions.