A New York Times reporter joined CNN on Wednesday night to discuss her reporting on the family of a Green Beret buried in Arlington National Cemetery expressing concern that former President Donald Trump's campaign filmed at his gravesite without permission and in an area where campaign photos are b...
I don’t know how it could be more clear.
And if it was so unclear then your question of “why did they agree to do this and smile?” is inappropriate because there is nothing indicating they are the family in the photo and you assumed it to be true.