Four people are dead and two are injured after two separate plane crashes in Winnebago County on Saturday.
Officials say a helicopter and a gyrocopter collided mid-air at the Wittman Regional Airport near Oshkosh, killing two people and injuring two more. Just a few hours earlier, a small plane crashed into the nearby Lake Winnebago, killing both people on board. The FAA and the NTSB are investigating.
