US President Donald Trump will address the national March for Life in person on Friday, making him the first president in the event’s 47-year history to do so, organizers announced.

“See you on Friday...Big Crowd!” the president said Wednesday in a retweet of a video from last year’s march, posted by the national March for Life account.

Jeanne Mancini, president of March for Life, said in a statement that the organizers of the Washington, D.C., event are “deeply honored” to welcome Trump to the march.