A terrifying discovery was made at a nuclear facility in South Carolina: radioactive wasps. Radiological Control Operations found a wasp nest on a post close to a tank at the Savannah River Site in Aiken, according to a report from the U.S. Department of Energy.

Workers discovered a radioactive wasp nest near tanks storing liquid nuclear waste. Officials say there’s no need to panic, but watchdog groups are skeptical.

COLUMBIA, S.C. (AP) — Workers at a site in South Carolina that once made key parts for nuclear bombs in the U.S. have found a radioactive wasp nest but officials said there is no danger to anyone.