The document introduces the Flawless Execution Model which emphasizes the importance of the debrief phase for operational excellence. It describes the STEALTH debrief method which involves reconstructing events, evaluating successes and failures, identifying root causes, determining lessons learned, and ensuring lessons are documented and shared with appropriate channels. Structured and facilitated debriefs have been shown to enhance performance more than unstructured or no debriefs. The debrief method emphasizes being nameless and rankless to have an open discussion focused on improving performance.