The video’s publisher, who knows the masked man’s true identity, says the “Flag Ninja” has been putting flags in trees throughout the United States. “My friend, the Ninja, has been secretly raising American flags in tree tops all over the county, and not very many know his true identity,” reveals the video uploader. “There are currently 38 flags flying high.” On this occasion, the man dressed as President Trump to surprise a supporter who’s undergoing surgery next month.