Think of the enlisted member as the worker in a civilian company. The enlisted are the ones who hands-on perform the job. Within the "worker group," NCOs (Army, Air Force, and Marines) and Petty Officers (Navy and Coast Guard) are the foremen and line-supervisors. They perform the job, but also provide direct supervision to the other workers. Senior NCOs (Army Air Force and Marines) and Chief Petty Officers (Navy and Coast Guard) are assistant managers who came up through the ranks of the corporation. They are valuable as managers because of their many years of experience, but will never make it to the Board of Directors. Commissioned officers are the managers of the company. They have broad areas of responsibility for the management, organization, and efficiency of various departments of the corporation. Senior commissioned officers (generals and admirals) are the board of directors. Warrant Officers can be thought of as the experienced technical specialists that the company hired to perform highly-specialized functions.