A notice in an Oklahoma newspaper set many Newkirk residents on edge.
The Department of Homeland Security announced the small town near the Kansas border will host a biological weapons simulation at the now-abandoned Chilocco Indian School.
In 2018, the department wants to release "non-hazardous, non-toxic" chemicals and biological materials on buildings in the area.
They want to see what might happen if a terrorist were to release similar chemicals as a biological weapon, and if buildings would offer residents any kind of protection.
Residents say the announcement worries them.