President Donald J. Trump assists a soldier in laying the wreath at the Tomb of the Unknown Soldier on Memorial Day 2018. (David FIsher/For personal)

Soldiers guard the Tomb of the Unknown Soldier on Memorial Day. (David Fisher/For personal)

A member of the secret service stands guard as the president speaks to a crowd inside the amphitheater. (David Fisher/For personal)

Two soldiers participate in the Changing of the Guard on Memorial Day at Arlington National Cemetery. (David Fisher/For personal)