North Korea successfully conducted its third “hypersonic gliding warhead” test on Tuesday, according to state media, which said leader Kim Jong Un guided the missile test alongside his sister Kim Yo Jong and top officials.

It was the first missile test Kim officially attended since March 2020, as the Academy of Defence Science and military officials have reportedly led over a dozen missile tests since then, including “hypersonic” tests last week and in Sept. 2021.

According to the party-run Rodong Sinmun, the hypersonic gliding warhead on Tuesday separated from the missile and flew 621 miles (1,000