A Naval Air Station (NAS) is a military facility used by the United States Navy for the operation and support of naval aviation. These bases provide essential services such as aircraft maintenance, training, and logistics. They often include runways, hangars, and other infrastructure necessary for the operation of various types of aircraft, including fighter jets and helicopters. NAS facilities play a crucial role in the readiness and effectiveness of naval forces. They support missions related to national defense and can also serve as training grounds for personnel. Some well-known examples of NAS include Naval Air Station Pensacola and Naval Air Station North Island.