 These same features were described in a 2018 DARPA grant by WIV and U.S. scientists. With respect to the grant, SARS-2 had the proposed backbone from the proposed region in China, the proposed adaption to human killing, the proposed diversity from SARS-1, the proposed no-seum cleavage site number, location, and pattern, the proposed human cleavage site at the proposed S1-S2 junction.