Vi (TV Series)

Vi was the female artificial intelligence computer that was partly in charge of operating and running the Center for Disease Control building in Atlanta. It is heard in the last two episodes of Season 1 of The Walking Dead (TV Series).

Atlanta, Georgia, Center for Disease Control
It is unknown when Vi was first activated however, Vi was the main computer that saw to the day-to-day operations at the CDC. It was the public address system used throughout the CDC, relaying audible messages and announcements throughout the building with a female voice, as well as gathering and storing data on diseases, experiments, and research that when on throughout the building. Vi was also commanded with specific instructions that in the event of a major power loss or terrorist attack, high-impulse thermobaric (HITs) fuel-air explosives are to be released which produces a blast wave of significantly greater power and duration than any other known explosive except nuclear. This is an extreme measure to protect the public and ensure that no infectious diseases escape the facility.

Season 1
When the outbreak occurred, the scientists at the CDC began to give up on trying to find a cure slowly leaving Vi in charge of the building. When Candace and Edwin Jenner were the remaining scientists left, Vi recorded the data of Candace when she was infected, being Test Subject 19 to allow Edwin to find a cure. While Edwin tried to find a cure, Vi was left in charge of the building and backing-up all data and saving power from all non-essential systems as well as communicating with Edwin Jenner.

Wildfire
Vi was documenting all of the video diary logs of Dr. Edwin Jenner and uploading it to anyone else who was listening. While Dr. Edwin Jenner was working in one of the Bio-safety Level 4 labs, he accidentally mixed toxic chemicals together on a sample which caused Vi to alert that the air quality has been compromised and that a full lab decontamination was required. Once Dr. Jenner exited the lab, Vi sterilized the lab with fire burning all samples along with it and preventing Edwin from continuing his development of finding a cure. While Edwin was giving up hope inside the CDC control room, Vi alerts Dr. Jenner that the sensors were detecting movement outside the building. Edwin checks the computer screens and discovers Rick Grimes' group outside. He eventually commands Vi to open the doors and allow Rick and his group to enter the CDC building.

TS-19
Once everyone is inside the building, Edwin commands to re-seal the main entrance and shut down all power. Vi was formally introduced to Rick and the group of survivors. Once everyone was settled in, Dr. Jenner gets Vi to show him what he knows about the disease and gets Vi to show all his research on Test Subject 19. Everyone watches as Vi shows the 3-D MRI image and then Dale inquires about a clock that was counting down to which the group finds out leads to a full facility decontamination. Dr. Jenner refusing to answer what happens when the counter reaches zero, the group asks Vi who tells them about the HITs. Realizing that the facility is loosing power, Vi announces at the thirty minute mark that the facility is prepping itself for the full scale decontamination event, it begins to shut down all non-essential systems and power to try and keep itself running for as long as possible. Not being able to conserve anymore power, Vi deployed the HITs following protocol and destroyed the entire Center for Disease Control and itself.