Natural Gas Explosion

A flame flickers near a protrusion of pipes in the charred ground and trees over the area where a natural gas explosion at a pipeline burned one person and damaged houses on Friday, April 29, 2016, in Salem Township, Pa. The explosion caused flames to shoot above nearby treetops in the largely rural area, about 30 miles east of Pittsburgh, and prompted authorities to evacuate businesses nearby. (AP Photo/Keith Srakocic)