After the U.S.-North Korea summit in February 2019 ended without an agreement, new open-source satellite images showed that the site was undergoing reconstruction and appeared operational. On 7 December 2019, a satellite image obtained by CNN showed activity and the presence of a large shipping container at the facility's engine test stand, which observers said could indicate plans to resume testing engines which are used to power satellite launchers and intercontinental ballistic missiles. The next day, North Korea announced that it had carried out a "very important test" at the site, and said it would play a "significant role" in changing the country's strategic position in the near future.