 Police indicated at that time they had no reason to believe the deaths involved a third party, saying at the time the circumstances relating to the deaths appeared limited to the residents of the home and there was no ongoing threat to the public. Police have not released their own investigative findings in that case. And the Southern Wisconsin Regional Airport will once again host an air show with pistons and props next month. Event chair Joshua Gowey says the event is the culmination of a lot of planning.