In the far southern outskirts of Dallas County, Chad Houser pulled off the I-45 highway, drove onto a dead-end road leading to several shooting ranges and made a quick right turn to his final destination: the Dallas County Youth Village , a non-secure juvenile detention facility for 10-to-17-year-old boys. Stepping out of his car, Houser, a chef at the acclaimed Dallas bistro Parigi , noticed a putrid stench rising from the nearby landfill and water treatment plant. He grabbed a bundle of...