When grilling meats over a direct flame, be sure to have a spray bottle nearby to extinguish flare-ups and preventing burnt edges
This is false. Per Cutting Edge Firewood:
The problem with misting flareups with water is that water doesn’t extinguish grease fires, such as those caused by fat or oil. It will only stir up the ash, some of which may land on your food. If a flareup occurs, try closing the dampers to starve the fire of oxygen. Once the flareup has died down, you can reopen the dampers to keep your fire going. Just remember to avoid misting it with water.