The U.S. Military flew a pair of b-1b bombers and four f-35 fighter jets in bombing drills with South Korea over the Korean peninsula, in a show of force against North Korea.

A South Korean defense ministry official said the bombers flew from Guam and the fighters flew from Japan, joined by four South Korea’s F-15K fighter jets in the drill.

A total of 10 bombs including MK-84, MK-82, and GBU-32 were dropped onto targets on a shooting range in Gangwon province, according to South Korea’s Air Force.