Callahan


 * Characters
 * Harold Callahan, a Pentagon internal security officer and member of the United States Army, mentioned in the Fallout 3 add-on Broken Steel.
 * Mrs. Callahan, a vault dweller of Vault 111, in Fallout 4.
 * Mr. Callahan, a vault dweller of Vault 111, in Fallout 4.
 * Angela Callahan, a librarian who was selected for residency in Vault 51, mentioned in the Fallout 76 add-on Nuclear Winter.


 * Other
 * Callahan's Magnum, a unique .44 Magnum revolver, in the Fallout 3 add-on Broken Steel.