Interlude in Hurricane Bertha

Drove home from Sheffield in torrential rain. Then at home there was a brief interlude of sunshine and this trio of trouble played out on the soggy grass and loved it!
At one point I heard Megan (aged 7) say to Sophia (aged 4) 'Do you know how to use a gun?' Completely unphased she said: ' yes of course'!!!!
They then ran round and round hiding from each other. I never worked out the rules but they seemed to know what they were doing!