Tianna Swisher, a student at Liberty Valley Elementary School in Danville, Pa., attempts to drink from the water fountain at Montour Preserve near Washingtonville, Pa., during an outdoor field trip. (Associated Press)
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Tianna Swisher, a student at Liberty Valley Elementary School in Danville, Pa., attempts to drink from the water fountain at Montour Preserve near Washingtonville, Pa., during an outdoor field trip. (Associated Press)
