on this sunday night, pure evil has another american is executed by isis terrorists, the president condemns the killing. and the top military officials say the battle against isis will take years. without warning, gas leaks from a texas chemical plant killing four workers and leaving a cloud over a major metropolitan area. kids at risk. the new warning about the popular energy drinks and what can happen if young children consume them. and call of the wild. using the latest technology to keep people and bears a safe distance apart.