 Nyorai kupfuurira kweiyi ndima - Muna February 2011, boka revanhu 16 vasayendisiti rinotungamirirwa naGast rakabudisa mushumo pashure pokudzokorora uchapupu hwezvesayenzi hunobatanidza kuongorora kweFBI kwetsamba dzeanthrax dzakatumirwapashure pokurwiswa kwaSeptember 11 muna 2001. Hutachiona hweanthrax hwaiva mutsamba dzacho hwakatumirwa nenyika yose uye hwakanga hwauraya vanhu vashanu uye hwakarwarisa vamwe 17. 