Which method of surveillance involves observing from a fixed location?

The method of surveillance that involves observing from a fixed location is indeed the one known as Fixed or Stationary Surveillance. This approach allows officers to monitor a specific area or subject without the need for moving around. By remaining in a static position, officers can gather information over time and document activities that occur in their line of sight.

This method is particularly useful in scenarios where sustained observation is necessary, such as monitoring a suspect's activities or maintaining surveillance on a location of interest. The fixed position reduces the risk of being detected while allowing for a fuller and more detailed observation of what is happening in the target area.

In contrast, other methods such as Mobile - Foot Surveillance or Mobile - Vehicle Surveillance require officers to move alongside or around their target, which may limit the ability to capture all details effectively. Electronic Surveillance, while it allows for remote observation, relies on technology rather than physical presence and may have legal implications regarding privacy and consent. Therefore, the Fixed/Stationary Surveillance method is the most suitable for scenarios requiring prolonged observation from a non-moving vantage point.