SmartDraw includes thousands of professional-looking diagrams like this that you can easily edit and make your own.
Text in this example:
Establishing the Role of First Responders
Source: National Institute of Justice,
Fire and Arson Scene Evidence: A Guide for Public Safety Personnel
Inform authorities about the status of the incident, hazards, injuries,
witnesses, the location of evidence, and other pertinent facts.
Request additional personnel resources, such as firefighters,
EMS personnel, law enforcement officers, investigators, and
representatives of utility companies.
Establish staging areas to ensure that emergency and support
vehicles have access into the area.
Establish a command post and implement an incident command
i.e., a point of contact and line of communication and
authority for public safety personnel.