American researchers concealed their intention to conduct high-risk coronavirus research in Wuhan under lax safety standards from the Pentagon the year before the COVID-19 pandemic, according to documents obtained by U.S. Right to Know. A 2018 grant proposal called Project DEFUSE, coauthored by the Wuhan Institute of Virology and American scientists, has stoked concern that the pandemic resulted from a lab accident. It proposed engineering high-risk coronaviruses of the same species as SARS and SARS-CoV-2. The proposal involved synthesizing spike proteins with furin cleavage sites " the same feature that supercharged SARS-CoV-2 into the most infectious pandemic pathogen in a century. These experiments were proposed to occur in part in Wuhan with fewer safety precautions than required in the U.S. " apparently to save on costs. American scientists at the center of the "lab leak theory" controversy appear to have concealed this from their desired funder " the Defense Advanced Research Projects Agency " in order to evade any national security concerns about doing high-level biosecurity work in China. The documents call into question the credibility of these scientists' assurances that the pandemic could not have sprung out of their collaboration ... with the lab in Wuhan. Conducting coronavirus engineering and testing work in Wuhan entailed greater biosafety risks, the American researchers privately acknowledged.