Helicopter Sea Combat Squadron 21 (HSC-21), nicknamed “Blackjacks”, is an aviation unit of the US Navy based at NAS North Island. HSC-21 is made up of five expeditionary detachments that deploy aboard ships including Combat Logistics Force support ships, Hospital Ships and Amphibious Assault ships, among others. HSC-21 flies the Sikorsky MH-60S Seahawk helicopter currently. This patch was created for the ‘BAHRAIN FLYING CLUB’ and says “OUT OF SIGHT” (top), “OUT OF MIND” (middle), and “NOT. KWITE. RIGHT” (bottom)…..and does not come with velcro attached.
