In any case, when the convicts who escaped from the NCR Correctional Facility led by Samuel Cooke discovered the Vault, it was completely abandoned.

Patient notes in the clinic indicated that many patients were experiencing psychosis or aggression, but the notes give no indication that the doctor is aware of the cause. Some inhabitants suspected that the doctor may also have been involved.

Both factions blamed this on the other, unaware that the true culprits were the overseers, at the direction of Vault-Tec. There were also notes hearing noises, feeling unusual drafts of air from vents, and seeing the lights blinking patterns like some sort of code. Many journal entries indicate levels of paranoia, blaming the other faction for Vault malfunctions, and the doctor for drugging them. Subliminal messaging may have been a factor, as a child states on his terminal that he was hearing high-pitched noises, and so were his friends. The main purpose of the Vault's experiment was to induce paranoia through non-chemical and non-violent means. Vault 19 was unique in that it had two overseers, one for the Red Sector, one for the Blue Sector. The inhabitants of Vault 19 were segregated into two different colored sectors, red and blue, with limited contact between them.

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