Sentence examples for are on alert from inspiring English sources

Both U.S. and Japanese forces in Asia are on alert as the launch date approaches.

The guards on the Saudi Arabian side of the border with Yemen are "on alert" for attacks by the Houthi rebels in control of parts of the country.

South Korea and the U.S. are on alert.

"We are on alert, not alarm.

Still, American hospitals are on alert — cautious, but not panicked.

So, like the tax collectors, the mail processors are on alert these days.

"Our ports are on alert," said Inez Tenenbaum, chairwoman of the commission.

In London, the police are on alert because of the funeral Wednesday of Margaret Thatcher, the former British prime minister.

All concerned are on alert for symptoms related to 3-MCC: lethargy, weakness, dizziness, dehydration and vomiting.

"Rather than look for signs of acceptance from others, lonely people are on alert for signs of rejection," she said.

"We have ensured that manpower and material are on alert and special teams are stationed in vulnerable blocks," he said.