In this June 8, 2017 photo, Yellowstone National Park photographer Jim Peaco, right, walks pasts tourists while toting his 600mm Canon lens mounted on a tripod in Yellowstone National Park, Wyo. His motto is every photo can be improved with the use of a tripod. From garbage truck driver to seasonal slide librarian in 1984, Peaco finally got a toehold on a dream job: Yellowstone National Park photographer. (Brett French/The Billings Gazette via AP)
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