Final answer:
Regular patrols are crucial for surveying a site's security, identifying threats, and ensuring safety measures are in place. Varying patrol times enhances the security strategy's effectiveness.
Step-by-step explanation:
Conducting regular patrols is important because it allows security personnel to survey the site's security effectively. These patrols can identify potential security threats, ensure that security measures are functioning correctly, and increase the overall safety of the area.
Varying the times of patrols, such as during different times of the year, using flights to and from various locations, and on different days of the week, can help in providing a comprehensive understanding of the site's security at various intervals, thus being unpredictable to potential threats.