How does Air Shield work?--2 rquestions

[Sheap]

I think the arrow just goes away. But I don't know for sure.

[Psitticine]

I'm not anything like sure, but I think they just go away. It is purely a visual impression, but it seems like those volleys into shielded troops just don't hit, rather than being deflected. I think you'd see more hits under such circumstances, where the Air Shield was merely moving the hits around until somebody's protection failed or it finally struck an empty square.

[Nerfix]

Air shield deflected missiles in Dom I. Not sure about 2 or 3.