What key factors are assessed during an after-action review (AAR)?

The correct choice highlights a comprehensive approach to evaluating performance and outcomes after an operation or training exercise. An after-action review (AAR) serves as a critical tool for continuous improvement, focusing on four essential components: what was planned, what actually happened, why discrepancies occurred, and recommendations for future improvement.

Understanding the planned versus actual events enables teams to identify gaps in execution or strategy. Analyzing why particular outcomes occurred allows individuals and units to pinpoint the root causes behind successes or failures, thus fostering an environment of accountability and learning. Finally, discussing how to improve ensures that lessons learned transform into actionable changes, enhancing future performance and operational effectiveness.

On the other hand, the other choices, while incorporating relevant elements, do not cover the full spectrum needed for an effective AAR. They are more focused on specific aspects of operations or resources used, rather than a holistic view that drives long-term improvement and tactical growth.