Five year old Nathan's excitement level is at a fever pitch. He's costumed, head to toe, as his hero, Superman. He walks hand in hand with his dad, smiling and surveying a host of others dressed as their favorites. There goes Batman, looking both ways before crossing the street. On the corner stands Captain America, posing for a photo with eager fans. There's a Spiderman funnel cake in hand, strolling in the distance.