In my assessment we had to act covertly." "

Vris acted covertly, smuggling forbidden meals when punishment included doing without dinner.

According to Ritter, inspectors acted covertly on behalf of the United States to deliberately provoke Iraq into non-compliance, thus providing U.S. war planners with a justification for war.

They seem to be trying to act covertly.

In 1948, Francis acted covertly for the British Government inside Franco's Fascist Spain.

Although he never defended himself against such criticism, there is evidence that he chose to keep his public pronouncements circumspect while acting covertly to assist Jews seeking refuge from the Holocaust.

At that time, he made it clear that he envisioned several types of pre-emptive action, from boosting foreign aid to acting covertly against potential enemies to sending in troops.

Police must act covertly, and tactics must ensure immediate incapacitation to give the bomber no opportunity to detonate the bomb.

I am well armed and have no need to act covertly.