Washed away roads, damaged water and sewer systems, and other significant infrastructure and unknown trail damage from what might have been a "once-in-a-thousand-year-storm" greatly complicates how soon Yellowstone National Park can reopen, and in what condition, and the odds are long that it will fully return to normal this year, Superintendent Cam Sholly told a national audience of journalists Tuesday during an hour-long Zoom call.