Toxic chemical crews inspecting the chemical weapons stockpile at the Blue Grass Army Depot discovered an M55 rocket leaking GB, or sarin, vapor.
The vapor was considered low-level and was confined to an airtight tube. No vapor was detected in the storage igloo's atmosphere, according to a depot statement.
The rocket, enclosed in the shipping and firing tube, will be packed in another leakproof container on Tuesday and later moved to another igloo.
This leak posed no danger to people nearby, the statement said. The county and state emergency management agencies were notified, the statement said.