The Chesapeake Bay Frontier Defense Sector refers to a geographical area within the United States military's defense structure, specifically under the jurisdiction of the U.S. Army. This sector is strategically located around the Chesapeake Bay, a large inlet identified by its estuarine nature and significant watershed system on the Atlantic Coast. The primary role of this defense sector is to safeguard the region from potential threats, ensuring the protection of coastal resources and maintaining national security. The Chesapeake Bay Frontier Defense Sector's operations may include surveillance, patrolling, disaster response, and various other defensive measures to protect the United States' interests in this critical area.