This disaster review assesses a case occurrence involving The Art Gallery of New South Wales-NSW Sydney. The facility is holding a prestigious fine art and precious painting exhibition. The Gallery is hosting public viewing for paintings undertaken by older persons. Various groups arrived at an interval of 20 minutes at 10 am and at 10.20 am. At 10.25, it is reported that a suspicious person arrived in the gallery, carrying a backpack and having a thick jacket. The suspicious person arrived with the second group of people entering the gallery. Inside the gallery, the person produces a weapon and huddles towards the older people and gallery staff into a corner of the exhibition room. He says he will kill everyone if his demands are not met.
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