Or from another source - http://www.waaytv.com/news/local/uah-mysterious-radar-signature-caused-by-chaff/article_5712699c-ce15-11e2-ba9d-0019bb30f31a.html
With the caption, "UAH Severe Weather and Radar research groups picked up this material along Zierdt Road. The material is believed to have caused strange radar signatures detected Tuesday over Redstone Arsenal."