Nikitas was dancing in the no-man's land between wakefulness and sleep when he was suddenly alerted by the sounds of music played live.

'Jerry's boy friend,' said Barrett, suddenly alerted.

Danny had no idea what had suddenly alerted him, but something out there in the wasteland had triggered an inner alarm.

I turned the key in the ignition, suddenly alerted by the sullen grinding that indicated a low charge on the battery.

Suddenly alerted, he searched carefully and found a half dozen ash trees.

Siona heard it then, the way he carried his venom in a sleeve of soft vowels and she was suddenly alerted.

Suddenly alerted by something seen out of the corner of his eye, one of the young Marines felt an icy death-grip on his spine.

Suddenly alerted, he raised the Reaper.

Then he started out to search the room more thoroughly but he was alerted suddenly by an approaching surge of strong thought-impulses.

He was still mulling over these gloomy thoughts when he was suddenly alerted by a familiar phrase.