The Cokeville Elementary School hostage crisis Catastrophe occurred Presence on Friday , May 16 , 1986 , in Cokeville , Wyoming , United States , when former town marshal David Young , 43 , and his wife Doris Young , 47 , took Conquering 136 children and 18 adults hostage at Cokeville Elementary School .

When the children became Becoming increasingly loud , Doris Young began Process_start begging Request the teachers to settle the group down .

At one point she lifted Motion her arm sharply and the bomb went off Process_end prematurely , injuring Bodily_harm Doris Young while David Young was out of the room .