ththe big elephants and their big trip to pittsburgh. reporter: thandi, seeni and sukiri. accompanied by the handlers with whom they grew up. and a man whose children watched a documentary about culling in population control which killed adults and left youngsters orphaned. please, dadad, mommy, we ve got to stop this from happening, can we do something, can we please do something? reporter: in 1992, udum and his wife created an elephant orphanage on their botswana farm for these three elephants. the best thing we could have done. children, thank you for that. reporter: several years later the elephants were moved to a nature reserve. then when sexually mature, they were moved to a camp in botswana s delta. that s where last year a handler was injured while working one of the elephants. and because of the camp s remoteness, died. the incident and an injury that in pittsburgh they wouldn t even have kept him overnight in reporter: that is where the