A Navy Chief, specifically a Chief Petty Officer in the U.S. Navy, is the most senior enlisted leader who works alongside and leads junior and senior Sailors. They are responsible for upholding tradition, enforcing discipline, and being experts in their field, with extensive knowledge of how a ship is supposed to run. The rank of Chief Petty Officer was officially established on April 1, 1893, and over time, the Chief has become a symbol of pride across the Navy. They are compared to the rank of gunnery sergeant in the U.S. Marine Corps, sergeant first class in the U.S. Army, and master sergeant in the U.S. Air Force. Chiefs are known for their leadership, mentorship, and humility, and they play a crucial role in guiding and training junior officers and Sailors in their respective ratings.