Surveillance can be conducted through which means?

Surveillance can be effectively conducted through both stationary (fixed installations) and mobile means. This method enhances the ability to monitor situations, gather intelligence, and maintain situational awareness. Fixed installations, such as security cameras and watchtowers, provide a constant view of a designated area. In contrast, mobile units, which may include vehicles or personnel who can move to different locations, allow for dynamic monitoring and the ability to respond to incidents as they arise.

The breadth of options available for surveillance ensures that it can be adapted to various environments and threat levels. This flexibility is crucial for effective security measures and helps in gathering useful intelligence over both short and prolonged periods.