 It's unclear exactly what happened, but one blade on a turbine at the Vineyard Wind project experienced some damage Saturday night. In a photo of the turbine taken by the Nantucket Current, it looks like the blade sort of snapped near the base, but is still hanging on and dangling high above the water. Each of the blades on these turbines is about the length of a football field. Vineyard Wind has not disclosed the cause of the damage, but says the matter is under investigation by the federal government and the blade manufacturer, Boston-based GE.