Seniors From Thomas Jefferson High School for Science and Technology Research Biofilm on the Roof of the Memorial Amphitheater at Arlington National Cemetery

(Clockwise from left) Dr. Mary Susan Brunett, teacher; Aman Shankardass, senior; Grace Yang, senior; Sadhana Suri, senior; and Kelly Cho, senior; from the Biotechnology Lab at Thomas Jefferson High School for Science and Technology; look over their equipment on the roof of the Memorial Amphitheater at Arlington National Cemeterym, Arlington, Virginia, Oct. 20, 2017. The students designed a research project to better understand the black stains that are affecting the amphitheater as well as other monuments like the Jefferson Memorial. (U.S. Army photo by Elizabeth Fraser / Arlington National Cemetery / released)

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