At that moment certain internal alarms stirred, but did not quite go off.

All his internal alarms were ringing, telling him to track down the assistant chief engineer, but there was no time.

It's tempting, but there's an internal alarm on the main stairs somewhere, and probably others.

The internal alarm went off, too late to do any good.

I was starting to feel comfortably fuzzy when 1 heard something that set off an internal alarm.

Seeing him, Joel stopped, his breath suspended, an internal alarm going off for no reason.

From somewhere there was the noise of the internal alarm.

There was nothing and no one to set off her internal alarms.

The sound was so alien to the natural rhythm of the night her internal alarms went off.

All of your internal alarms are activated and you prepare to face danger or run away.