So apparently when there's a big nick in the ice, snow and water won't quite do. They have to bring in more specialized equipment - like a fire extinguisher. What's funny is college-age skating minions usually do all the work on the upkeep of the ice, replacing lane lines, etc. I swear they end up skating more at the end of the day then the competitors! The only time the judges get involved is to inspect the minions' work...and to use the fire extinguisher. I think they secretly enjoy using it.