I remember being at an age where my parents left us on our own for a few hours one evening. Well we managed to scare ourselves silly into thinking that someone was in the back garden… i rang Grandad and he came running over to the house like Batman and sat with us until Mum and Dad came home. He was laughing because obviously there wasn’t anyone in the garden. 
That was the sort of Grandad he was, always put us first when we needed him without any hesitation.