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Photo by: Julie Jacobson

FILE - This Jan. 20, 2011 file photo shows shadows creeping up on sandstone cliffs glowing red as the sun sets on Zion National Park near Springdale, Utah. The National Park Service is taking steps to ban drones from 84 million acres of public lands and waterways, saying the unmanned aircraft annoy visitors, harass wildlife and threaten safety. Jonathan Jarvis, the park service’s director, told The Associated Press he was signing a policy memorandum on Friday directing superintendents of the service’s 401 parks to write rules prohibiting the launching, landing or operation of unmanned aircraft in their parks. (AP Photo/Julie Jacobson, file)

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