The chronological log maintained by officers guarding the perimeter is based on what?

• A. Time of occurrence of events at the crime scene
• B. Estimated time of incident
• C. Witness consultation times
• D. Sequence of reports

Answer: (A)

The main idea is to establish an accurate timeline of what happened at the scene. The perimeter log is a running record that notes the exact times events occurred, with time stamps from the scene. This creates a reliable sequence of actions—when the area was secured, when entries were made, when evidence was collected, and when responders arrived—so investigators can reconstruct what happened and verify actions taken. An estimated time of incident is less precise and can muddy the timeline, and while noting witness consultations or the order in which reports came in can be useful, they don't form the primary basis of the chronology.