He kept his face in the shadow as they pulled back the bolt on the door, an unnecessary precaution because the pirates suspected nothing.

It turned out to be an unnecessary precaution.

His shirtsleeve, an unnecessary precaution, really, dangled not far from her face.

I followed his instructions, but it was an unnecessary precaution.

The act had seemed an unnecessary precaution at the time.

Perhaps I'm taking unnecessary precautions; but, if so, there's no harm done.

Roland drew back, averting his face, but it was an unnecessary precaution.

I repeat, Adam, this should be an unnecessary precaution.

In fact, it proved to be an unnecessary precaution.

That was an unnecessary precaution on the thick carpet.