A man is rescued from flooding by the crew of a U.S. Army National Guard Blackhawk helicopter in eastern Kentucky, U.S. in a still image from video taken July 28-29, 2022. Staff Sgt. Shaun Morris/U.S. Army National Guard/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

Members of the Tennessee Task Force One search and rescue team wade through the debris-filled Troublesome Creek, after a search dog detected the scent of a potential victim in Perry County, Kentucky, U.S., July 31, 2022. Jeff Faughender/USA Today Network via REUTERS. NO RESALES. NO ARCHIVES. MANDATORY CREDIT

A man is rescued from flooding by the crew of a U.S. Army National Guard Blackhawk helicopter in eastern Kentucky, U.S. in a still image from video taken July 28-29, 2022. Staff Sgt. Shaun Morris/U.S. Army National Guard/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A man holds a baby while exiting a U.S. Army National Guard Blackhawk helicopter after being rescued from flooding in eastern Kentucky, U.S. in a still image from video taken July 28-29, 2022. Staff Sgt. Shaun Morris/U.S. Army National Guard/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A man is rescued from flooding by the crew of a U.S. Army National Guard Blackhawk helicopter in eastern Kentucky, U.S. in a still image from video taken July 28-29, 2022. Staff Sgt. Shaun Morris/U.S. Army National Guard/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A man is rescued from flooding by the crew of a U.S. Army National Guard Blackhawk helicopter in eastern Kentucky, U.S. in a still image from video taken July 28-29, 2022. Staff Sgt. Shaun Morris/U.S. Army National Guard/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A flooded area is flown over by a Kentucky National Guard helicopter deployed in response to a declared state of emergency in eastern Kentucky, U.S. July 27, 2022. U.S. Army National Guard/Handout via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A woman is carried to a U.S. Army National Guard Blackhawk helicopter during a rescue from flooding in eastern Kentucky, U.S. in a still image from video taken July 28-29, 2022. Staff Sgt. Shaun Morris/U.S. Army National Guard/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A Kentucky National Guard flight crew from 2/147th Bravo Co. flies over a flooded area in response to a declared state of emergency in eastern Kentucky, U.S. July 29, 2022. U.S. Army National Guard/Sgt. Jesse Elbouab/Handout via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A submerged house is seen in flood affected area, in Breathitt County, Kentucky, U.S., July 28, 2022. Wolfe County Search & Rescue Team/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. MANDATORY CREDIT. NO RESALES. NO ARCHIVES

A flooded area is flown over by a Kentucky National Guard helicopter deployed in response to a declared state of emergency in eastern Kentucky, U.S. July 27, 2022. U.S. Army National Guard/Handout via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

Reggie Ritchie comforts wife Della as they pause while clearing out their destroyed manufactured home destroyed by the flooding from Troublesome Creek behind them in Fisty, Kentucky, U.S. July 29, 2022. Matt Stone/USA Today Network via REUTERS NO RESALES. NO ARCHIVES. MANDATORY CREDIT

A Kentucky Army National Guard helicopter crew surveys disaster areas due to flooding during a media flight around eastern Kentucky, U.S. July 30, 2022. U.S Army/Spc. Danielle Sturgill/Handout via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A Kentucky Army National Guard helicopter crew surveys disaster areas due to flooding during a media flight around eastern Kentucky, U.S. July 30, 2022. U.S Army/Spc. Danielle Sturgill/Handout via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A man is rescued from flooding by the crew of a U.S. Army National Guard Blackhawk helicopter in eastern Kentucky, U.S. in a still image from video taken July 28-29, 2022. Staff Sgt. Shaun Morris/U.S. Army National Guard/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A Kentucky Army National Guard helicopter crew surveys disaster areas due to flooding during a media flight around eastern Kentucky, U.S. July 30, 2022. U.S Army/Spc. Danielle Sturgill/Handout via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

A woman is helped to exit a U.S. Army National Guard Blackhawk helicopter after being rescued from flooding in eastern Kentucky, U.S. in a still image from video taken July 28-29, 2022. Staff Sgt. Shaun Morris/U.S. Army National Guard/Handout via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. TPX IMAGES OF THE DAY

Old photographs, among the archives being kept in a basement of the Settlement School and damaged in flooding, hang from a clothes line to help them dry after being cleaned in Hindman, Kentucky, U.S. August 1, 2022. Amanda Rossmann/USA Today Network via REUTERS NO RESALES. NO ARCHIVES. MANDATORY CREDIT

Children exit a U.S. Army National Guard Blackhawk helicopter after being rescued from flooding in eastern Kentucky, U.S. in a still image from video taken July 28-29, 2022. Staff Sgt. Shaun Morris/U.S. Army National Guard/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

Kentucky National Guard helicopter crew members carry a victim of flooding, during their deployment in response to a declared state of emergency in eastern Kentucky, U.S. July 27, 2022. U.S. Army National Guard/Handout via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.