SigOps is a division within the Global Defense Initiative which appears in Tiberian Twilight.
Background
The SigOps are concerned with global tracking and surveillance.
In-game
They were responsible for tracking the Prophet Kane's transport which had moved to the Artic Hub which was generating mysterious signals similar to the Scrin Tower. In order to prove Kane's intentions, a Commander and Colonel James intended to follow the Brotherhood of Nod leader to the facility so that his plan could be exposed to the world.
Sources
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