In this photo provided by South Korea Defense Ministry, U.S. Air Force B-1B Lancer bombers, bottom left and third from top, fly with South Korean and U.S. fighter jets over the Korean Peninsula, South Korea Saturday, July 8, 2017. Two U.S. bombers flew to the Korean Peninsula to join fighter jets from South Korea and Japan for a practice bombing run as part of a training mission in response to North Korea's ballistic missile and nuclear programs, officials said Friday. (South Korea Defense Ministry via AP)