She went briskly, alertly, like one with a definite end in view.
Jim began backing off as soon as he had it in his hand, watching Spence alertly.
He looked at neither of the bad-men, but he was very coolly and alertly on guard.
He was alertly watchful for any quick thrust that might find him off guard.
He did not see the fire smouldering in the squinting eyes so alertly watching ...