A South Dakota Army National Guard UH-60 Black Hawk helicopter drops 600 gallons of water on a fire in Rapid City. A South Dakota Army National Guard UH-60 Black Hawk helicopter drops 600 gallons of water on a fire in Rapid City, South Dakota, on March 9, 2012. The helicopter crew is assigned to the Army National Guard Aviation Support Facility. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 050594-V-NZV49-055.jpg Photo Gallery