A woman in a car was ramming a man on a motorcycle, chasing him down the streets of Chula Vista, California. A police drone flew after them, broadcasting a live video feed to officers’ smartphones.All officers in the department had been out on other high-priority calls when they received the report of two people fighting — so they deployed their newest emergency response tool. Thanks to the footage from the drone, when officers arrived on scene, they knew exactly where to find the woman and man, and what had happened moments beforehand.They arrested the woman for assault with a deadly weapon, but also found the man happened to be riding a stolen motorcycle. The theft was unrelated to the incident.This is how the Chula Vista Police Department has started using drones to respond to calls, as part of a Federal Aviation Administration program. While police departments have already used drones as part of investigations after a crime has occurred, this program sends a drone out ahead of officers while the crime may still be in progress; officers use that footage to decide how to approach the situation.