This is a member of the 3rd US Infantry Regiment, or “The Old Guard”, an elite unit of the US Army tasked with, among other things, guarding The Tomb of the Unknown Soldier in Arlington National Cemetery in Virginia. The precision of this unit is admirable to say the least.
American Photo Blog 
feels so patriotic just looking at the picture. Can’t imagine in person
Thanks Tina! It is a very patriotic place to visit. I had my nephew and niece with me and I think even they were impressed!