Overview
Vault-Tec Corporation, otherwise known as Vault-Tec and sometimes called Vault-Tec Industries, is a fictional defense megacorporation from the post-apocalyptic Fallout franchise. Throughout the United States, Vault-Tec created government-funded vaults, large fallout shelters that would serve to shelter civilians and allow for the continuation of human life in the threat of a nuclear attack. Within most of these Overseer-governed vaults, Vault-Tec carried out human experiments on its residents without their consent or knowledge, ranging from being mostly harmless to disturbing and inhumane.