U.S. Park Rangers close the entrance to the Grand Canyon for the day Friday, May 15, 2020, in Grand Canyon, Ariz. Grand Canyon National Park has increased recreational access at the South Rim to selected viewpoints. The South Rim will reopen May 15-18 for incoming traffic from 6-10 a.m. with limited day use access. The National Park Service is using a phased approach to increase access on a park-by-park basis during the COVID-19 pandemic. (AP Photo/Matt York)