What kind of substances should first responders note during evidence preservation?

First responders play a crucial role in evidence preservation at incident scenes, and it is vital for them to note various types of substances that could help understand the incident better. Noting drugs, open containers, and suspicious activities is particularly important because these elements can provide context regarding the circumstances that led to the incident.

Drugs can indicate possible substance abuse that might have played a role in or contributed to the event, while open containers may suggest intoxication or violation of laws regarding alcohol consumption. Additionally, observing and documenting suspicious activities can assist law enforcement in determining whether criminal behavior was involved.

By focusing on these specific substances and behaviors, first responders can gather critical evidence that may be influential in investigations and legal proceedings, ultimately contributing to a clearer understanding of the incident's dynamics.