New Jersey Drones; Dropping a Clue

The volume and desperate tone of public servants has reached a shrill crescendo, without any indications of subtle thinking. So here’s a clue, in the form of a riddle. At least some members of law enforcement will get  it:

You’re on the case of a bank robber. He’s knocked off three banks, but hasn’t left enough clues for your dragnet. You really want to get this guy. What is the one thing you don’t want him to do?

If you take this where it should go, it will explain a lot.

***Dragnet***