US deploys bombers in response to North Korea missile testsThe show of strength came after Kim Jong Un oversaw the launch of a ballistic missile capable of reaching any part of US mainland.The B-1B bombers conducted joint aerial drills on Saturday with other South Korean and US warplanes, according to South Korea's joint chiefs of staff.North Korean leader Kim Jong Un watched the test with his daughter - the first time she had been seen in public - and boasted the ICBM was a "reliable and maximum-capacity" weapon to contain US military threats.The North's Korean Central News Agency (KCNA) said the missile fired from Pyongyang International Airport travelled up to a maximum altitude of about 6,040km (3,750 miles) and flew a distance of about 1,000km (620 miles) before it landed in international waters off the country's east coast."The test-fire clearly proved the reliability of the new major strategic weapon system to be representative of (North Korea's) strategic forces and its powerful combat performance as the strongest strategic weapon in the world," KCNA said."