Tactical Autonomous Robotic Defense System
From Halopedia, the Halo wiki
The Tactical Autonomous Robotic Defense System was tested in Industrial Zone 08 of Chicago, URNA, on Earth. However, with the rise of augmentations in human soldiers, the project and its facility were deemed irrelevant. Eventually, the campus was later leveraged by the United Nations Space Command to be used as the basis of a War Games simulation.
The Halo 2 multiplayer map "Foundation" takes place at the Tactical Autonomous Robotic Defense System facility. Parts are stamped with the words "Abandon in Place", indicating the project's failure. The project abbreviated may be a reference to the TARDIS from Doctor Who.
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