Sentence examples for on heightening from inspiring English sources

As darkness fell, a rented spotlight unit was switched on, heightening the "Mad Max" look.

Federer is on heightened alert — now more than ever.

The military said it was not on heightened alert.

For many days before such important political events the authorities are on heightened alert.

Military planes and helicopters have been standing by on heightened alert, as have the secret services.

Knowing that, government officials and consumer watchdogs have been on heightened alert for possible fraud.

Updated at 9.13pm BST 9.11pm BST Police departments in New York City, Washington and elsewhere are on heightened alert.

Because the officers believed that a gun was involved, they were on heightened alert.

New Brunswick and the Rutgers University campus are on heightened alert because of nine sexual assaults since September 2001.

The history and implications of evolutionary theory have taken on heightened meaning since Sept. 11.

Local and state law enforcement officials in Virginia are on heightened alert awaiting the execution.