The Sikorsky CH-54 Tarhe is a twin-engine heavy-lift helicopter designed by Sikorsky Aircraft for the United States Army. The civil version is the Sikorsky S-64 Skycrane. The Army purchased 105 CH-54s before its discontinuation. The S-64 Aircrane is still in production. There are currently numerous complete and partial airframes in existence for this aircraft. Some CH-54's and some S-64's (both E and F models) are owned, and have been remanufactured, by Erickson Air-Crane Inc.
In July 2022, five CH-54s were assigned to fighting the Washburn Fire, based at the Mariposa-Yosemite Airport.
Later in July 2022, two more CH-54s were assigned to work on the Oak Fire. and were based at the Mariposa-Yosemite Airport.