What is one of the primary methods of surveillance?

Aerial tracking is one of the primary methods of surveillance because it provides a unique vantage point that can cover a wide area and capture movement and activities that may not be easily observable from the ground. This technique utilizes aircraft, drones, or similar technology to observe subjects from above, making it advantageous for monitoring large or difficult-to-access locations. Aerial tracking can be particularly effective in investigations involving tracking vehicles or understanding the layout of an area in relation to the subjects involved.

While other methods like randomized observation, indiscriminate recording, and public gathering observations can be part of surveillance strategies, aerial tracking offers distinct advantages in scope and perspective, allowing for more detailed assessments of behavior and movements in various contexts.