day parade is ticking off at our nation s capital. from the american revolution to wars in iraq and afghanistan. peter doocy is there, he s live at the parade grounds. peter? reporter: hey, a they will. there are lots of people. we think there will be tens of thousands, maybe hundreds of thousands of people here. it s really cool because it is memorial day. there is a huge american flag that s too big to fit in our shot. they are trying to make the entire parade route a moving time line of american history. so the way they are going to do that. there is a lot of music and a lot of service members here. they are veterans and family new mexico and reeven actors. they are going to reenactor