Packers crowd gets patriotic with huge American flag display

The 2011 NFL season got off to a patriotic start Thursday night with a coordinated American flag display by 70,000 Green Bay Packers fans at Lambeau Field.

During Jordin Sparks' performance of the national anthem, fans held up placards to make a wavy flag that could be seen from above by NBC cameras.

The visual was even cooler when seen from the blimp covering the game: