"We turned off of a main thoroughfare to a smaller residential street, and that's when the shots rang out. I was standing, I believe, right next to the shooter. I saw muzzle flash, but unfortunately I didn't get a chance to see who the shooter was," he said.
Who would open fire on a parade?
People panicked and ran.
Aziz, who has worked in the Middle East, started taking pictures.
He sent those images to CNN iReport.