 Nyorai kupfuurira kweiyi ndima - Zvidzidzo zvinokosha zvechiitiko mukutsvakurudza kweHRO zvinosanganisira zvose zvidzidzo zvematambudziko semuenzaniso, Three Mile Island njodzi yenyukireya, Challenger Njodzi uye Columbia Njodzi, Bhopal chemakemikari leak, Tenerife air crash, Mann Gulch forest fire, Black Hawk friendly fire incident muIraq uye HROs senge air traffic control system, naval aircraft carriers, uye mashandiro enyukireya. 