Jail Prison Break

PRISONERS ARE PLOTTING A PRISON BREAK!
A very very dark night,it's raining heavily,it's almost impossible to see a man's face even if he is standing in front of you.And bad things happen,the prisoners are plotting a prison break!They break the lock of cell and run out of it,dashing to the main door of the prison,this is horrible!
These prisoners all are murders waiting to be sentenced,if they run out they would commit crime and hurt more people. If they make it,the prison break would certainly cause more harm to the society. As a prison guard,your mission is to shoot these prisoners trying to run out of prison and stop their prison break plan. Your mission matters about life and death of many innocent people outside,it's a mission we cant fail on. Those prison break prisoners run in a group,so you have to move as quickly as possible,shoot them all and stop them from running to the main door.