. S . ▁Army , ▁the ▁Chem ical ▁Corps ▁and ▁the ▁U . S . ▁Air ▁Force ▁all ▁expanded ▁their ▁bi ological ▁war fare ▁programs ▁significantly , ▁especially ▁concerning ▁delivery ▁systems . ▁Through out ▁the ▁cold ▁war , ▁the ▁United ▁States ▁and ▁the ▁Soviet ▁Union ▁would ▁combine ▁to ▁produce ▁enough ▁bi ological ▁weapons ▁to ▁kill ▁everyone ▁on ▁Earth . ▁ ▁Another ▁substant ive ▁expansion ▁phase ▁was ▁during ▁the ▁Kennedy - John son ▁years , ▁after ▁Mc N am ara ▁initi ated ▁Project ▁ 1 1 2 ▁as ▁a ▁compreh ensive ▁initi ative , ▁starting ▁in ▁ 1 9 6 1 . ▁Despite ▁an ▁increase ▁in ▁testing , ▁the ▁read iness ▁for ▁bi ological ▁war fare ▁remained ▁limited ▁after ▁this ▁program . ▁A ▁ 1 0 ▁November ▁ 1 9 6 9 ▁report ▁by ▁the ▁Inter de partment al ▁Political - Mil it ary ▁Group ▁submitted ▁its ▁find ings ▁to ▁the ▁N ixon ▁administration ▁that ▁the ▁American ▁B W ▁cap ability ▁was ▁limited : ▁ ▁Field ▁testing ▁of ▁the ▁bi ological ▁weapons ▁was ▁completed ▁cover t ly ▁and ▁successfully ▁with ▁sim ul ants ▁and ▁agents ▁dispers ed ▁over ▁wide , ▁open ▁areas . ▁The ▁first ▁American ▁large - scale ▁a eros ol ▁vulner ability ▁test ▁occurred ▁in ▁the ▁San ▁Francisco ▁Bay ▁Area ▁in ▁September ▁ 1 9 5 0 , ▁using ▁two ▁types ▁of ▁b acter ia ▁( B ac ill us ▁glob ig ii ▁and ▁Ser rat ia ▁mar ces c ens ) ▁and ▁flu ores cent ▁particles . ▁Bac ill us ▁species