Either it is Patriot's Day

in (Romantic) Arlington, or else the Shriners have risen and are marching on the Town Hall to stage a military coup.

One way or another, Arlington's Patriot's Day Parade does pack a wallop...plenty of bands-clowns-re-enactors and suchlike.
The American Legion looked good the local notables ditto and the muster of klassic kars was neato keen.