North Korean leader Kim Jong Un observed the ground jet test of a new high-thrust rocket engine on early Saturday morning, state-run Korea Central News Agency (KCNA) reported on Sunday morning.

State media said the newest engine was “another miracle” in the history of the country’s national defense industry, and that it used a much higher thrust compared to previous models.

“Kim Jong Un have inspected the our-style high power engine that the Academy of the National Defense Science has newly developed,” KCNA said, adding the test was held at the Sohae Satellite Launch Station, more commonly known as the