Hurricane Helene destroyed a Tennessee hospital. Officials knew it was at risk.
CBSN
Erwin, Tennessee — April Boyd texted her husband before she boarded the helicopter.
"So, I don't want to be dramatic," she wrote on Sept. 27, "but we are gonna fly and rescue patients from the rooftop of Unicoi hospital."
Earlier that day, Hurricane Helene roared into the Southern Appalachian Mountains after moving north through Florida and Georgia. The storm prompted a deadly flash flood that tore through Unicoi County in eastern Tennessee, trapping dozens of people on the rooftop of the county hospital.
As NASA scientist Chad Greene flew over northern Greenland with a team of engineers in April, they never expected their radar to find something manmade buried deep within the ice. Greene and his team were flying above the Greenland Ice Sheet on a NASA Gulfstream III plane, scanning the barren expanse of ice that's more than a mile deep in some areas, when their radar instrument picked up something unusual.