Sentence examples for is on heightened from inspiring English sources

Federer is on heightened alert — now more than ever.

France is on heightened alert for signs of al-Qaeda penetration among its Muslims, estimated at somewhere around 4.5m (7.5% of the total population).It would be a mistake, however, to believe that tensions over the growing number of Muslims in Europe are simply a by-product of the "war on terror".

It is not clear why the government is on heightened alert, although in a recently published speech Mr. Jiang accused Western countries of using "ideological infiltration" to break up the Soviet Union and warned that they were trying the same thing in China.

South Korea is on heightened alert for any kind of "extreme actions" Pyongyang might take, Park said, asking for bipartisan support.

France is on heightened alert and has been under a state of emergency since a wave of Islamist attacks last year.

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

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

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.

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

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