1. What was planned? - Review the intent of the mission - Key task assignments. - Desired "End State" (what does "Right" look like).
2. What actually happened? - Establish the facts - Provide your perspective to build a shared picture of what happened.
3. Why did it happen? - Analysis of cause and effect - Focus on WHAT, not WHO. - Explain what occurred.
4. What are we going to do next time? - Correct Weaknesses - Focus on items you can fix, rather than external forces outside of your control. - Sustain/Maintain Strengths - Identify areas where groups are performing well and should sustain. This will help repeat success and create a balanced approach to the AAR."
Reference: https://www.nwcg.gov/wfldp/toolbox/aars