You saw the woman's face at the sign of danger.

The 7% level is usually seen as the danger sign.

Whatever it might have been, he could see no sign of danger.

On the following day, the first clear sign of danger appeared.

The three others left in one car, slowly, ready to turn back at any sign of danger.

"But come back if there is any sign of danger."

Bill had set the table without being asked, which I should have recognized as a danger sign.

Danger sign: Half the world's major cities are under water.

But it is still 1-1, and all the danger signs were there in the last few minutes of the half.

"And I'll report back at once if there's any further sign of danger!"