I slashed my wand outward, like a conductor ceasing an entire orchestra at once. The fiendfyre obeyed me, and a small part in the back of my mind knew I should be scared that I was able to do this now. Bodies burned, and I was grotesquely reminded of flame-broiled hamburgers by the smell. I recoiled as the smell and other things came over me, and I braced for the backdraft. Instead of heat spilling over, it was coolness, water. What the..? I raised my eyes to see sprinklers were flooding the room. Looking around, I saw that the corpses were burned to ash.