Several area fire departments have hit the water for ice rescue training.  Brookfield's volunteer fire departments had their new members put on ice rescue suits and go out on Candlewood Lake at the town park.  Older fire department members taught them how to rescue people who have fallen through the ice.  Brookfield officials say this type of emergency is a very low frequency but high risk event, and that doing annual training is essential.  Ridgefield firefighters on the "D" shift were out training a few days ago.  With the temperatures at or below freezing. Southbury Fire Department called it the best day for cold water rescue training.