She accepted the offer, and quickly became a field agent.

Maybe she wasn't cut out for being a field agent.

Mary became a field agent like Richard, giving them both an easy cover as a married couple.

He was thinking and acting like a field agent again.

The retired field agent turned his head up to the two old men.

You are short of good field agents as it is.

He would never have survived five minutes as a field agent.

And where will I find the field agents to handle it?

His field agents needed a good laugh once in a while.

A man of your rank, working as a field agent?