Sheriff’s Department Dive team to rescue Bednarek after his brother reported him missing on Lake Winnebago Sunday afternoon . Sergant Bonack says the accident points to how dangerous the conditions are on Lake Winnebago. "You can never be too safe, too careful, bad things can happen out there," Bonack told AM 1170 WFDL's Between the Lines program. "When you are out in the elements like that you need to be prepared for the worst. We've had a stretch of cold weather where people think that with the duration of that cold weather that lakes are froze tight. I'm here to tell you absolutely they are not."