Hungerford Massacre 1987

Hungerford documentary on BBC 1, a mad man on the rampage shooting people. 16 killed. Two kids run up to an old lady in the park and say "My name is Hannah I'm 4, this is my brother James he's 2, mummy has been shot by a man in black, can you help us get home? We live at the house with the blue door." What would you do?