Oh god COD4 story mode. I always hated waiting for the flag to stop blowing.

Is that an AT Field?

Holy fuck, she can't even kill Kotonoha with an rifle! D:

And it's an anti-material sniper rifle, maybe AS-50 or Barret M80A1. However I think even a EM-Rail Cannon is still useless to Kotonoha Katsura.