He and the others were killed in the line of duty.

She didn't want to talk to anyone, had come only from a sense of duty, something no one would thank her for.

Far above and beyond the call of duty, so to speak.

Or the three women who lost their lives in the line of duty?

Six other American military women also died in the line of duty.

He's been shot 47 times in the line of duty.

You are going to go beyond the call of duty.

Have we been here for a full period of duty, then?

Sometimes we'd watch for hours on end, all in the line of duty.

These people killed four Federal officials in the line of duty.