Mateo Island

Here are the Canon Foundry facts about Mateo Island, all taken from the International Rescue Thunderbirds Agents’ Technical Manual written by Sam Denham (2012):

In the event of emergencies, and to provide additional service facilities, Mateo Island has also been converted for International Rescue’s use by the Tracy family
A monorail link to the main island (Tracy Island) allows access and transportation of supplies without drawing attention to the organization’s activities
Has an atomic fusion reactor
Has an air recycling and pumping station
Has a deployed emergency satellite communications station
Communications antennae doors and hangar doors are disguised by a rock face (such as that which conceals Thunderbird Two’s hangar on Tracy Island)
Has an emergency launch bay for Thunderbird Three
Has cahelium-strengthened fuel tanks linked via an undersea pipeline to Tracy Island
There is a main hangar, a hangar for the Tracy family jet and a hangar for small family boats and Thunderbird Four