Officer O'Brian

Officer O'Brian is a member of Vault 101 security in Fallout 3.

Background
Officer O'Brian is guarding the locked atrium door to the Vault 101 entrance together with Officer Richards.

Effects of player's actions

 * O'Brian and Richards kill Tom and Mary Holden unless the player character is seen by the officers before Tom reaches them. This will cause them to start shooting and scare away Tom and Mary.

Appearances
Officer O'Brian appears in Fallout 3.