The 39th Rescue Squadron is an Air Force Reserve Command unit of the 920th Rescue Wing (920 RQW) at Patrick Space Force Base, Florida. Until December 2019, it operated the Lockheed HC-130P/N Combat King aircraft conducting search and rescue and combat search and rescue/personnel recovery missions. The squadron is currently transitioning to the Lockheed Martin HC-130J Combat King II aircraft, which will provide significant increases in the squadron's capabilities. An Air Force Reserve Command unit, the 39th Rescue Squadron is operationally-gained by the Air Combat Command (ACC) upon mobilization.