Insignia Complex A is a remote communications complex first mentioned in Episode 5 The Signal. The bunker is believed to be run and funded by Insignia Life Enterprises.

This unknown location is where Dr Cooke first interpreted The Signal. A twin-prop aeroplane is heard on entry to Complex A, suggesting that this location is accessible by plane.

In Episode 8 The North Hatch, Agent Brannon declares that it is freezing outside, suggesting that Insignia Complex A may be in a frozen environment.

Agent Brannon's arrival and Dr Cooke's signal investigation may be in a past timeline.

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