Instructor Scott Grahn, left, leads an ice and cold water rescue exercise on Saturday, Feb. 10, 2018 at Northmoreland Park Lake in Allegheny Township, Pa. When a person falls through ice into frigid water, a countdown on their life begins. For those who would rescue them, preparation is vital. That's why, officials said, training sessions like one held Saturday at Northmoreland Park in Allegheny Township are so important.(Jack Fordyce/Pittsburgh Tribune-Review via AP)
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