Which of the following is NOT a role of the U.S. Army?

The U.S. Army traditionally focuses on land-based operations and is organized primarily for prompt and sustained land combat, which includes seizing and occupying land areas and defeating enemy land forces. These functions are critical to national security and involve a ground force's direct engagement with enemy forces and the control of territory.

In contrast, conducting aerial covert operations generally falls under the purview of other branches of the military, such as the Air Force or special operations units, which specialize in air operations and covert missions. While the Army may support or participate in joint missions that involve air assets, conducting covert operations from the air is not a primary role of the Army itself. The distinction lies in the primary responsibilities assigned to each branch of the military, reflecting their specialized training and organizational focus.