 Working outdoors tough, especially during heat waves like we've just had. And Madeline Wright visited the Penn Woods Winery in Chadds Ford to find out how workers there deal with the heat. Cornelio Hernandez has been spending a lot more time inside this air-conditioned tractor. It's the only way he can work in the vineyard for long periods of time and stay safe. It's dangerous to never try to do a full day work outside because it's dangerous.