for Rolling Thunder by Kate Messner and Greg Ruth
Lines of bikes are miles long, shining, half a million strong. Rumbling, grumbling, engines roar. Peace signs. High fives. Spirits soar. Every Memorial Day in Washington, DC, more than a million veterans and their supporters gather for the Rolling Thunder® Ride for Freedom, a demonstration that pays tribute to the men and women of the US armed forces. This lyrical story honors the bravery and sacrifice of those American heroes -- the ones who have returned home, and the ones who haven't.
Publisher description retrieved from Google Books.