What is the meaning of 'joker'?

• A. The weather forecast for the mission
• B. Aircraft's scheduled time to return to base, adjustable by weather, fuel, maintenance
• C. The call sign of the lead aircraft
• D. A waypoint name

Answer: (B)

Joker is the planned time to return to base, set at the start of a mission and adjusted as conditions change—like weather, actual fuel burn, or maintenance issues. It gives you a flexible target to RTB while keeping safety margins, and you can push it later or earlier as the mission unfolds. The other items describe something different: weather forecasts, the lead aircraft’s call sign, or a navigational waypoint, none of which are what Joker denotes.