 Also today, working outdoors is tough in these heat waves like the one we're just coming out of. And Madeline Wright visited the Penn Woods Winery in Chadds Ford to find out how workers there deal with it. 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.