Isaias, which was downgraded to a tropical storm Saturday but expected to regain hurricane strength, was bearing down on south Florida, and units of the National Park System from Everglades National Park north to Cape Hatteras National Seashore on the Outer Banks of North Carolina were boarding up and closing down.

Vandals, possibly trying to get paint molds of sandstone outcroppings at Zion National Park, painted vivid blue blocks in the Kolob Terrace area of the park, spurring an investigation into who's responsible.

A young Colorado man climbing at Rocky Mountain National Park without being roped in fell 600-800 feet to his death from the east face of Longs Peak.

It was a year ago when a Navy pilot on a training run through a canyon on the west side of Death Valley National Park was killed in a crash that also injured several visitors who had come to watch the flights. Today you can find an exhibit at the Rainbow Canyon overlook that explains the training flights and includes a biography of late Lt. Commander Charles Z. Walker.