There’s a feeling in the air, and maybe a bit of a chill, too.

There’s a marching band on the field, the national anthem giving way to two teams ready to duke it out.

Maybe it’s Wheaton Warrenville South vs. Wheaton North, or Glenbard East against Glenbard West, or Willowbrook playing Addison Trail.

It’s a rivalry game, and it’s one of the highlights of the high school football season for players, families and fans.

But during at least two rivalry games, there’s another reason for high energy, too — another current of purpose to the games pitting Neuqua Valley against Waubonsie Valley and Naperville Central against Naperville North.

It’s something Naperville values as much as sports — if not more. Charity is an element of these crosstown games as teams raise money for two community causes.

Veterans and children with disabilities benefit from funds raised through T-shirt sales and sponsorships around these two gridiron classics — Waubonsie hosting Neuqua at 7:30 p.m. Friday and Naperville Central hosting Naperville North on Oct. 7.

Here’s how these teams incorporate philanthropy to strengthen the impact of their fight for bragging rights ...