In the United States Navy, the United States Coast Guard and the United States Public Health Service Commissioned Corps, admiral (ADM) is a four-star flag officer rank, with the pay grade of O-10. Admiral ranks above vice admiral and below fleet admiral in the Navy; the Coast Guard and the Public Health Service do not have an established grade above admiral. Admiral is equivalent to the rank of general in the other uniformed services. The National Oceanic and Atmospheric Administration Commissioned Officer Corps has never had an officer hold the grade of admiral. However, of the U.S. Code establishes the grade for the NOAA Corps in the case a position is created that merits the four-star grade.