Search teams said dogs lost track of Kreycik’s scent amongst the many winding trails. Neiderhaus said they fear that the heat on Saturday may have played a role in his disappearance as temperatures reached triple digits on Saturday ‘We are concerned due to the heat. We don’t think he has a large water source,’ he said. Pictured, Pleasonton Ridge Regional Park where the Berkely Ca runner went missing. ‘Always be prepared’ Adding, ‘Always be prepared. Don’t take it easily. Anything can happen… a 15-minute run or an hour run.’ Neiderhaus added that investigators didn’t suspect foul play or that Kreycik wanted to disappear.