Vault 7 was a Vault-Tec vault built before the Great War as part of the Great Vault Experiment. The main purpose of this vault was to observe how long society could last without medical aid and/or personnel.
Ben Eldridge Incident[]
Ben married some time after signing up for the vault. His new wife, Clem, was a nurse and so was refused entry to the vault by security. Ben, believing the vault was only for singles protested, and in an act of frustration killed the guard and sent Clem into the vault in his place, while he walked into the desert. Being a nurse, she realized there was no other medics and taught others in the vault medical techniques and helped the residents of the vault survive.