Marine Corps Air Station Yuma (MCAS Yuma) is a United States Marine Corps base located in Yuma, Arizona. It serves as a key training facility for Marine aviation units and is known for its vast airspace and favorable weather conditions, which allow for year-round flight operations. The base supports various military aircraft, including the F-35 Lightning II and AV-8B Harrier. Established in 1959, MCAS Yuma plays a crucial role in the training and readiness of Marine pilots and ground support personnel. The station is also home to the Yuma Proving Ground, where military equipment and systems are tested. Its strategic location enhances the operational capabilities of the Marine Corps.