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Tensions have been running high lately ever since the incidents in Alaska, and this is just one example of the effect it is having on everyone.
”— Incident Report 08-16-77
Harold Callahan was a magnum toting Pentagon internal security officer and member of the United States Army in 2077.
While serving as a member of the Pentagon's internal security, Callahan recorded several incidents in his personal terminal.
Harold Callahan is mentioned only in Fallout 3's add-on Broken Steel.
Behind the scenes
Harold Callahan (along with his magnum sidearm) is a cultural reference to Harry Callahan, protagonist of the Dirty Harry series of movies.