Crucially, his actions alerted the American troops to the impending attack, preventing an ambush.

Instead, their actions alerted us to a possible catastrophe, and then attracted the involvement of Project Sign.

By opening one, therefore, we increase the mathematical possibilities that our actions will alert the Bloodstone to their existence.

Former federal law-enforcement officials familiar with airline security said that any such action should have immediately alerted air-traffic controllers that something was seriously wrong.

Deva had wanted the bodies cut down, but Gaelen refused, pointing out that such an action would only alert the trackers.

Sim considered using his key to unlock and open them, but feared that any such action could alert a guard or the mistress of the castle.

The action at Garibpur, however, also alerted the Pakistanis to the 9th Division's proposed line of advance.

He didn't dare switch on the light whose button was beside the door, since that action might alert anyone inside.

But his action alerted the other boys of this region.

British actions prior to the assault, however, alerted the Germans to prepare to repel an invasion.