You know when she's going to fly based on the tour schedule and past flights anyway. What's a realistic scenario where you can do something bad to her while she

You know when she's going to fly based on the tour schedule and past flights anyway. What's a realistic scenario where you can do something bad to her while she's flying, but wouldn't be able to without knowing the precise time? (Keep in mind you can deploy your own ADB receiver to confirm the planes around your location in real time, regardless of the internet)