Officer O'Brian

Officer O'Brian is guarding the locked door to the Vault 101 entrance together with Officer Richards. He and Officer Richards are responsible for the deaths of Tom and Mary Holden, if the player is fast enough and kills both officers before they reach them, the death of the Holdens can be avoided.

The Holdens will also flee if the character gets shot at before Tom attempts his suicide run. Extra Karmic players may wish to utilize this to save the Holdens, and because the guards will rarely leave their post and chase the player the vault can be broken free from with minimal bloodshed.

However, they do not have to be killed. It is possible to sneak past the hallway leading towards them and get up on the stairs. Officer O'Brian is one of the officers carrying a 10mm Pistol.

Related quests

 * Escape!

Appearances
Officer O'Brian appears only in Fallout 3.