You are loading your mail vehicle in the parking lot and notice another carrier's vehicle has its lights left on. What do you do?

This scenario tests team orientation and common sense. Notifying your colleague about the lights left on is a simple, helpful action that prevents a vehicle problem. It costs you nothing and demonstrates the kind of team-minded behavior USPS values. Neither ignoring it nor escalating to the postmaster is the right balance — direct, collegial notification is appropriate.