This image taken from video from the Tennessee Emergency Management Agency shows a helicopter on the roof of Unicoi County Hospital in Erwin, Tenn., where patients and staff had to be rescued from after the Nolichucky River flooded and surrounded the building from Hurricane Helene, Friday, Sept. 27, 2024. (Tennessee Emergency Management Agency via AP)

An aerial view of flood-damaged Unicoi County Hospital in the aftermath of Hurricane Helene, Saturday, Sept. 28, 2024, in Erwin, Tenn. (AP Photo/George Walker IV)

An aerial view of flood damage in the aftermath of Hurricane Helene, Saturday, Sept. 28, 2024, in Erwin, Tenn. (AP Photo/George Walker IV)

An aerial view of flood damage in the aftermath of Hurricane Helene, Saturday, Sept. 28, 2024, in Erwin, Tenn. (AP Photo/George Walker IV)

Friends Robert Smith and David Mayben salvage items from the home of a family member who passed away in flooding, Tuesday, Oct. 1, 2024 in Hendersonville, N.C., in the aftermath of Hurricane Helene. (AP Photo/Brittany Peterson)

All that is left is the foundation of one of the White family homes, destroyed by Hurricane Helene, Tuesday, Oct. 1, 2024 in Morganton, N.C. The adjacent Catawba River flooded due to torrential rains destroying seven of the family's nine homes on the property. (AP Photo/Kathy Kmonicek)

An overturned tractor lies next to an uprooted tree on the White family' property in the aftermath of Hurricane Helene, Tuesday, Oct. 1, 2024 in Morganton, N.C. The adjacent Catawba River flooded due to torrential rains destroying seven of the family's nine homes on the property. (AP Photo/Kathy Kmonicek)

Damaged to one of the White family's homes that was destroyed by Hurricane Helene is seen, Tuesday, Oct. 1, 2024 in Morganton, N.C. The adjacent Catawba River flooded due to torrential rains destroying seven of the family's nine homes on the property. (AP Photo/Kathy Kmonicek)