NAVAL AIR FACILITY EL CENTRO, Calif. (Oct. 2, 2020) Aviation Machinist’s Mate 2nd Class Liam Winter, from Chadler, Ariz., wipes hide fluid off of a MH-60S Sea Hawk helicopter assigned to the “Black Knights” of Helicopter Sea Combat Squadron (HSC) 4 prior to flight operations at Naval Air Facility El Centro, Calif. HSC-4 provides vertical lift search and rescue, logistics, anti-surface warfare, special operations forces support and combat search and rescue capabilities. (U.S. Navy photo by Mass Communication Specialist 2nd Class Ryan M. Breeden)