An American flag was hung upside down on El Capitan at Yosemite National Park on Saturday following the firing of about 1,000 National Park Service employees.

A group of climbers, some who used to work for the Park Service, intended to raise awareness about how recent federal job cuts could threaten the country’s parks.

Organizers said the inverted flag, historically used as a sign of distress, was meant to draw attention to the Trump administration’s cuts to the National Park Service.