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For other characters named Harold, see Harold (disambiguation).
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I gave them both a warning, and told Mr. Bales that this is his fifth and final one... the next time he is discovered performing this type of activity on Pentagon property, he'll be fined and disciplinary action will be recommended.

Harold Callahan was a Magnum toting, Pentagon internal security officer and member of the US Army in 2077.


Main article: Callahan's terminal

Armed with his .44 Magnum revolver, Callahan was a member of the US Army, stationed at the Pentagon as a security guard in the months leading up to the Great War.


Harold Callahan is mentioned in terminal entries in the Fallout 3 add-on Broken Steel but does not actually appear in any game.

Behind the scenesEdit

The character (along with his Magnum sidearm) is a reference to San Francisco Inspector Harry Callahan, protagonist of the Dirty Harry series of movies who it noted for using a .44 Magnum as his weapon of choice as opposed to the standard police issue .38 caliber 6 shooter, and taking every 'dirty' police assignment that comes along. His character is noted for hating crime in every form and dealing with criminals and injustice in a way that is not entirely set nor endorsed by the protocols of the police force, or government.