FILE - This photo provided by South Korea Defense Ministry, shows balloons with trash presumably sent by North Korea, in South Chungcheong Province, South Korea, on May 29, 2024. South Koreans were alert Friday, June 7, 2024 for possible new launches by North Korea of balloons carrying rubbish into the South, a day after Seoul activists flew their own balloons to scatter political leaflets in the North. (South Korea Defense Ministry via AP, File)