A 12 second loop. Four worksheet nodes sit around a clockwise loop: threat (gusty wind), countermeasure (a shield), error trap (a speech bubble for a stop word) and recovery (a landing pad). The phase is named in the middle. A marker travels round the loop and each node responds as it arrives. In flight (the default, CALLOUT): the gust hits and the threat node pulses red, the countermeasure node lights green, the crew calls HOLD at the error trap, and the drone lands at the recovery node. Brief: each node is filled in with a tick before flight. Review: each node is updated with a pencil mark, and the marker carries the lesson back to the threat node for the next job. Fictional example. The still frame shows the in-flight HOLD callout.
