North Korea test fired two new upgraded surface-to-air missiles with leader Kim Jong Un observing the event at an undisclosed location on Saturday, state media reported the following day, months after similar missile launches.

Pyongyang’s Missile General Bureau “carried out firings against various targets to inspect the combat performance of the two improved types of new anti-air missiles,” according to the Korean Central News Agency (KCNA).

Kim observed the launches, providing instructions for the defense research sector ahead of the upcoming party congress.