President Trump helped lay a wreath at the Tomb of the Unknown Soldier at Arlington National Cemetery on Monday, a remembrance of fallen soldiers on Memorial Day, then made his first public remarks since returning from a nine-day trip to Europe and the Middle East on Saturday. "We only hope that every day we can prove worthy, not only of their sacrifice and service, but of the sacrifice made by the families and loved ones they left behind," Trump said, making a special mention of Robert Kelly, a son of Homeland Security Secretary John Kelly who died in Afghanistan after stepping on a mine. He also generally thanked members of other Gold Star families, who have lost family members in war, and urged other Americans to thank them, too. "To every Gold Star family: God is with you, and your loved ones are with him," Trump said. You can watch the wreath-laying ceremony below. Peter Weber