Virgil and Grandma are out resupplying Tracy Island when a distress call comes in: a mine is in danger of collapsing in the desert. When Virgil goes to help the workers, he gets caught in a massive sandstorm leaving Grandma to save the day.
- Kate - Kathryn Drysdale
- Dallas Rainey - Mac McDonald
- First Worker - Thomas Brodie-Sangster
- Second Worker - Tala Gouveia
International Rescue Equipment UsedEdit
- It is revealed that Grandma Tracy's name is Sally.
- Grandma states that she taught Jeff how to fly. Virgil and John say that it was a single-engine plane and that it was a long (long, long) time ago.
- This is the first time that Grandma is seen operating one of the Thunderbird fleet and also a rescue pod.
- This is also the first time that somebody other than a Tracy brother has piloted Thunderbird 2.
- John reveals that Virgil is his older brother.