Row After Row You take the Metro to Arlington National Cemetery next. As you walk past acre after acre of cemetery plots you are taken by how many individuals have given this ultimate sacrifice for their fellow countrymen. You pass by the Tomb of the Unknown Soldier and the gravesite of John F. Kennedy. It has been a very emotional day, trying to come to terms with the purpose of all the memorials you have seen and how they each make their own impression on you.