Middleton fire officials say an ice fisherman riding an A-T-V broke through the ice on Lake Mendota Wednesday night, making a rescue necessary.  The man got lost trying to return to shore in the fog, running into an ice heave near some homes.  The A-T-V sunk through the ice and left him stranded.  Luckily, a woman living nearby heard his shouts for help.  The man was surrounded by water and couldn’t get off his vehicle.  Firefighters responded to the lake and pulled him and the A-T-V to the shore.  The victim’s name hasn’t been released.