This looks like they had something bad planned at the cemetery. Take note of the critics, they likely knew.
"Real low energy’: Critics pile on after Trump cancels visit to U.S. military cemetery outside Paris."
https://www.washingtonpost.com/world/europe/trump-and-macron-meet-whats-left-to-talk-about/2018/11/10/680a014c-e1ec-11e8-ba30-a7ded04d8fac_story.html