U.S B-52 Flyover of South Korea in Response to North Korea Nuclear Test

The United States has flown a B-52 long range bomber to South Korea to conduct a low level flight over U.S military base. The U.S did the same thing back in 2013 about a month after North Korea's last nuclear test. The close military cooperation between the US and the Republic of Korea said that they are ready to respond at any time. To gather more information on the test US sent out WC-135 aircraft to Japan to "sniff" for possible radioactive isotopes in the atmosphere.