My armor slowed down the bullet, but the impact knocked me down the slope. It hurt like hell, as if someone had shoved a red-hot hook right through my lower back.
	If I hadn’t been in the middle of a fistfight with Mickey, my armor’s shielding might have deflected the shot. As it was, I had nothing but the armor plating itself between me and the bullet, and that proved not to be enough.
	Fortunately, my armor hadn’t stopped working. It automatically sealed the hole the bullet had made, keeping me from bleeding out, and injected me with a flood of biofoam, which brought the agony down from blinding to almost tolerable.

Halo: New Blood Ch 17