Final answer:
The word 'bug' in the sentence is jargon specific to the field of Law Enforcement.
Step-by-step explanation:
The word 'bug' in the sentence is jargon specific to the field of Law Enforcement. In this context, it refers to a concealed or hidden listening device. It suggests that the speaker discovered a device used to secretly listen in on conversations, confirming their suspicion of being watched.
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