“The United States flew some of its most advanced warplanes in bombing drills with ally South Korea on Thursday, a clear warning after North Korea launched a midrange ballistic missile designed to carry nuclear bombs over Japan earlier this week, the U.S. and South Korean militaries said. North Korea hates such displays of U.S. military might at close range and will likely respond with fury.”
Source: US flies bombers, fighters in show of force against North Korea