"IR Tent" is an unofficial title given by the Thunderbirds Wiki.
Scott and Virgil recharge

Virgil and Scott warming up within the tent

The IR Tent is a heat-generating tent stored within the Explorer. It is deployed whenever the International Rescue team needs to take breaks or wait things out in between longer rescue missions.


It appears in Recharge, where Scott and Virgil Tracy deploy it high in the Arctic while waiting for a hectic fog to clear. While inside waiting, the two brothers have a serious conversation about Scott's recklessness. Needless to say, the scene was in-tents.