USS Estes (AGC-12) was a Mount McKinley-class amphibious force command ship, officially named after "A mountain peak and national park in Colorado.". An alternative source of the name is "for the mountain range in Colorado near Estes Park", found at http://www.ussestes.org/ShipInfo/History.htm . However, the range near Estes Park is the Front Range; there is no mountain range named "Estes" in Colorado either..
She was designed as an amphibious force flagship, a floating command post with advanced communications equipment and extensive combat information spaces to be used by the amphibious forces commander and landing force commander during large-scale operations.