Which fleet covers the western half of the Atlantic Ocean?

The correct answer indicates that the 2nd Fleet is responsible for operations in the western half of the Atlantic Ocean. The 2nd Fleet, based primarily in Norfolk, Virginia, focuses on maritime security operations and activities that pertain specifically to the Atlantic region, ensuring the defense and strategic interests of the United States in this area. Given the geographical positioning and range of missions assigned to this fleet, it plays a crucial role in uniting naval forces and conducting operations across the Atlantic, including those related to NATO partnerships and bolstering alliances.

The other fleets do not have a primary focus on the western Atlantic. The 3rd Fleet mainly operates in the Pacific and waters westward of the International Date Line. The 4th Fleet is associated with operations in the Caribbean, Central and South America, while the 5th Fleet operates in the Middle East, primarily in the Persian Gulf and surrounding waters. Therefore, while they're all vital to U.S. Navy operations, only the 2nd Fleet is specifically designated to cover the western half of the Atlantic Ocean effectively.