Judy Jacobs (center), National Park Service, speaks with Dr. Mary Susan Brunett and four seniors (Aman Shankardass, Sadhana Suri, Kelly Cho, and Grace Yang) from the Biotechnology Lab at Thomas Jefferson High School for Science and Technology, on the roof of the Memorial Amphitheater at Arlington National Cemetery, 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. ( Army photo by Elizabeth Fraser / Arlington National Cemetery / relea

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Judy Jacobs (center), National Park Service, speaks with Dr. Mary Susan Brunett and four seniors (Aman Shankardass, Sadhana Suri, Kelly Cho, and Grace Yang) from the Biotechnology Lab at Thomas Jefferson High School for Science and Technology, on the roof of the Memorial Amphitheater at Arlington National Cemetery, 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. ( Army photo by Elizabeth Fraser / Arlington National Cemetery / released)

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Size: 1935px × 1291px
Photo credit: © PJF Military Collection / Alamy / Afripics
License: Licensed
Model Released: No

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