WHILE EXITING THE BUS AT THE CHANGE HOUSE FACILITY, THE EE STEPPED ON A TRAFFIC CONE THAT HAD BLOWN OVER ON THE SIDEWALK CAUSING HIM TO SLIP AND FALL. THE EE ATTEMPTED TO CATCH HIMSELF WITH THE HAND HOLDING HIS LUNCHBOX. THE LUNCHBOX ROLLED, TWISTING HIS THUMB BENEATH IT. THE TREATING FACILITY APPLIED A SPLINT TO HIS THUMB.