Which practice is essential to maintaining accountability across multiple responding units, including mutual aid?

Which practice is essential to maintaining accountability across multiple responding units, including mutual aid?

• A. Rely on informal radio chatter.
• B. Assign resources without a map.
• C. Use a centralized command without PARs.
• D. Maintain a current incident map, use unified command, perform check-in/check-out, use PARs, and standardized radio communications.

Answer: (D)