Opposition environment spokesman Luke Foley said the fact silencers were considered in the draft risk assessment report proved the hunting program had become a farce. "There's one simple solution here, Mr O'Farrell can abandon this very bad policy of opening our national parks to amateur hunters," Mr Foley told reporters in Sydney on Tuesday. He said the report also confirms Environment Minister Robyn Parker is "not up to the job" of managing the rollout of the program. Mr Foley repeated opposition calls for Mr O'Farrell to take personal responsibility for the policy and commit to resigning if any person is shot by an amateur hunter in a NSW national park. An employee at the company operating the balloon said the tourists were from Korea, Japan and Britain, as well as one Egyptian. "This is terrible, just terrible," an employee told AFP, declining to give her name. We don't yet know what happened exactly or what went wrong. The balloon which was carrying 21 people was flying at 300m over Qurna, in Luxor's West Bank, when it caught fire before exploding, a security official said. Two survivors, including the balloon's pilot, have been taken to hospital, he said.