|Equipment & Vehicles|
|St Christopher Brooch|
|Main Operator:|| Duchess of Royston (homing device)|
Lady Penelope (tracking device)
John Tracy (tracking device)
Scott Tracy (tracking device)
The Tracking DevicesEdit
The homing device has a massive range, Lady Penelope was able to watch the Duchess's movements from her car and home in England, while she was as far away as New York in America.
Thunderbirds 1 & 5 were also able to pin-point her location after she was kidnapped, which gave International Rescue the information to make a rescue and save her life.