I stopped someone walking into a prop.
Arriving a Britannia, I was on the headset as chock man installed the nose chocks, then proceeded towards the MLG to put the chocks. Only problem was that spinning prop was between him and MLG. He was head down with ear muffs on, dragging the chocks on ropes.
He didn't hear my shouting - I managed to rugby tackle him just ahead of the prop.
Far as I remember (it was 40 years ago) he just cursed me for hurting his knee.