You are a first responder dispatched to a Hazardous Materials (HazMat) incident. You find evidence that the incident may be the result of criminal or terrorist activity. Who would you first notify?

The correct answer is:

The incident commander

Explanation:

In this case, it would be necessary to notify in the first place to the incident commander who is the person responsible of analyzing the situation. This person must prioritize the following actions and should encourage the teams that need to intervene according to the specific situation.