Ones you have taken. Not just random shots of Arrowhead you find on google images. Bonus points if there is a story to go along with the pic.
It can be ones you have taken of the stadium, around the stadium. Special events. Fly overs you loved. It can be pics of you at field level before the game started so you could really see the field. It can be anything you want. Good or bad. I'm creating a photo album and your pic may be used. If you share it here, know that it may go out on twitter and fb as part of an album.
*edit - Album created here https://www.facebook.com/media/set/?...1&l=b127cf1ccc