PYEONGTAEK, SOUTH KOREA - FEBRUARY 17: U.S. Lt. Gen. Terrence J. O'Shaughnessy (L), deputy Commander of the U.S. Forces Korea, and Lee Wang-Geun (R), commander at South Korea's Air Force Operations hold a news briefing on a flight by U.S. F-22 stealth fighters over South Korea at the Osan Air Base on February 17, 2016 in Pyeongtaek, South Korea. U.S. military has deployed four F-22 stealth fighter jets to the Korean Peninsula as another response to North Korea's nuclear and missile threats. (Photo by Jeon Heon-Kyun-Pool/Getty Images)
