File — In this Saturday, April 30, 2016, file photo, a still image taken from security video released by the National Park Service, shows three men inside the perimeter fence at the edge of Devils Hole, in Death Valley National Park, Nev. The National Park Service says the men climbed a fence guarding Devils Hole, a detached portion of the park located in southwestern Nevada, on April 30. The Park Service says they fired a shotgun at least 10 times and one man swam in Devils Hole, a hot-water pool that is the only natural home of the tiny Devils Hole pupfish. The man left his boxer shorts in the water. (National Park Service via AP, File)
