A North Dakota National Guard UH-60 Black Hawk hovers as South Dakota National Guard airmen and soldiers below position a 1-ton sandbag near the Expo Center in Fort Pierre, June 5, 2011. SDNG Quick Reaction Forces trained on how to tether and release these sandbags to a hovering UH-60 Black Hawk. QRFs will be utilizing this skill to place sandbags at trouble areas along the levees where high water prohibits other vehicles from doing so, in the event a levee is compromised. There are nearly 1,300 South Dakota National Guard soldiers and airmen working with local, state and federal agencies around the clock during this historic flooding event to protect homes, property and people of South Dakota.