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The ethmoidal artery is a branch of the ophthalmic artery, originating from the internal carotid artery. It supplies blood to parts of the nose, eyes, and ethmoid sinuses in the skull. There are two types of ethmoidal arteries - the anterior and posterior ethmoidal arteries which supply the frontal sinus, anterior and middle ethmoidal air cells.

To a fault is an idiom used to describe a quality or characteristic that is so extreme or prevalent in a person that it may become a negative or harmful trait. It means an excessiveness of an otherwise positive quality, implying it could potentially cause problems or difficulties.

The Defense Information Systems Agency (DISA), known as the Defense Communications Agency (DCA) until 1991, is a United States Department of Defense (DoD) combat support agency composed of military, federal civilians, and contractors. DISA provides information technology (IT) and communications support to the President, Vice President, Secretary of Defense, the military services, the combatant commands, and any individual or system contributing to the defense of the United States.