The Boeing E-4B 'Nightwatch,' also known as the 'Doomsday plane,' made several loops above the Offutt Air Force Base in Nebraska on Monday. The massive jet serves as a flying command post for top officials, including the president, vice president and Secretary of War, during crises.
Japan estimates that the missiles reached a maximum altitude of 80 kilometres (50 miles) and flew approximately 340 kilometres before landing near the east coast of the Korean Peninsula, outside Tokyo's exclusive economic zone. Early reports indicate that no damage has been reported by nearby aircraft or ships.
South Korea hosts about 28,500 US troops in combined defence against North Korea's military threat and Seoul has raised its defence budget by 7.5% for this year. South Korea is capable of taking primary responsibility for deterring North Korea with critical but more limited US support, said the National Defense Strategy, a document that guides the Pentagon's policies. This shift in the balance of responsibility is consistent with America's interest in updating US force posture on the Korean Peninsula, the document added.
