It always take place in front of the West Valley Veterans Memorial, located in Oregon.
Those four pillars represent all four military branches and contain the list of names of tribal members who served, with a feather next to their name to signify when they died in action. I have many relatives whose names are on those pillars who served in the military from World War II to Iraq and Afghanistan. My own fiancé plans on serving in the Navy and will hopefully see his name on that memorial someday.