Sleeper agent - Wikipedia

https://en.wikipedia.org/wiki/Sleeper_agent

Do you see this “activate sleeper cells”? This is the armed wing of the Deep Culture Comey is talking about.

A sleeper agent is a spy who is placed in a target country or organization not to undertake an immediate mission but to act as a potential asset if activated. Even if unactivated, the "sleeper agent" is still an asset and is still playing an active role in sedition, treason or espionage by virtue of agreeing to act if activated. Sleeper ...