Looks like the United Nations, but it's the Peace Corps. Returned Peace Corps Volunteers carry flags from the 139 countries where Peace Corps has served over the years (since 1961). Taken during the Inaugural Parade 2009 along Pennsylvania Avenue.
Read about Audrey's experience of marching with the Peace Corps in the Inaugural Parade.
DPNinaug09dctrip09Pennsylvania Avenueinaugural paradeparadeflagsPeace CorpsRPCVNPCAinauguration2009 Presidential InaugurationWashington DCUnited StatesAmericaWashingtonD.C.District of Columbia