An 11 second loop. Four cards sit in a row: threat (a gust of wind), error (a checklist with a missed item), undesired state (the drone drifting toward a boundary) and recover (the drone held clear of the boundary). A red marker follows the chain. With "not trapped" selected, the missed check turns into an undesired aircraft state, the drone drifts toward the boundary, and the crew recovers it while there is still margin. With "trapped" selected, a green barrier springs up after the error and the marker bounces off it, so the error never becomes an aircraft state. Either way the marker then returns along a loop underneath to the threat card, turning blue: the lesson is carried into the next brief. The still frame shows the untrapped case recovering.
