Denver Broncos fans are encouraged to wear orange for the regular-season home opener on Sunday as part of "Orange Sunday."

The Denver Broncos open the season against the Seattle Seahawks at 2:25 p.m. Sunday at Broncos Stadium at Mile High.

RELATED | Cartoonist Drew Litton shares his take on the Denver Broncos season opener

First responders will sing the national anthem, unfurl the American Flag before the game and play a flag football game at halftime, the Broncos announced Friday.

Ring of Famer Karl Mecklenburg and Reuben Droughns will coach the Law Enforcement Team while Ring of Famer Rod Smith and Ebenezer Ekuban will coach the Fire/Rescue Team during Sunday's flag football game.

wide shot of Broncos Stadium cropped
Isaiah J. Downing, USA TODAY Sports

RELATED | Broncos rally towels made from recycled plastic bottles

If you're headed to the stadium Sunday, all parking lots will open at 8 a.m. and the Mile High Monument in the north lots will open at 10 a.m.

The Broncos official pre-game tailgate, Mile High Village, will open at 11:30 a.m. and is free for all ticketed fans at Gate 4.

All stadium gates will open at 12:30 p.m. with kickoff set for 2:25 p.m.

WATCH | New Denver Broncos gear you'll be getting this season

Broncos Country, we at 9NEWS want to see your Broncos fan photos all weekend long and on Orange Sunday. Upload your fan photos to http://yourtake.9news.com or email to YourTake@9news.com.

CHECK OUT | Your Broncos fan photos and videos

WATCH | Preview of new food items at Broncos Stadium this season