KC Chiefs OLB Justin Houston (50) leads the pre-game cheer in their Week 4 game against the New England Patriots.

Photo: Ric Tapia/NFL via nlfl.com

Arizona Cardinals celebrate during a Week 3 victory over the San Francisco 49ers

2014 Week 3 - Washington Redskins vs Philadelphia Eagles

Photo: Matt Rourke/AP via bleacherreport.com

San Diego Chargers say prayer before their matchup against the Buffalo Bills.

Photo: Sean M. Haffey/U-T San Diego (via Photo | UTSanDiego.com)

Philadelphia Eagles TE James Casey makes catch in front of Washington Redskins LB Ryan Kerrigan. [9-21-2014]

Photo: www.redskins.com

Kansas City Chiefs TE Anthony Fasano (80) makes a catch as Denver Broncos S Rahim Moore (26) defends. The Broncos won 24-17.

Photo: Chris Humphreys-USA TODAY Sports via Top NFL action - Week 2

Buffalo Bills RB C.J. Spiller (28) returns a kickoff for a touchdown against the Miami Dolphins on Sept. 14, 2014.  Bills won, 29-10.

Photo: Bill Wippert/AP via Top NFL action - Week 2

San Francisco 49ers G Daniel Kilgore (67) tackles Chicago Bears CB Kyle Fuller (23) after Fuller intercepted a pass from 49ers quarterback Colin Kaepernick. Bears came from behind to win 28-20.

Photo: Ed Szczepanski-USA TODAY Sports via Top NFL action - Week 2

The United States Marines unfurl a giant American flag during a pre-game ceremony at the San Diego Chargers / Seattle Seahawks game on Sunday, Sept. 14, 2014.

Photo: Gregory Bull/AP via Top NFL action - Week 2

Surrounded by Giants —- Arizona Cardinals WR Larry Fitzgeral tackled by New York Giants defenders after a catch during their matchup on .Sep 14, 2014. Cardinals won,25-14.

Photo: Robert Deutsch-USA TODAY Sports via Top NFL action - Week 2

not zombies, it’s just Seattle Seahawks fans

This was Sunday, Sept 11, 2005 at Miami’s stadium in a game between the Miami Dolphins and Denver Broncos.
Photo: Luis M. Alvarez/AP via nfl.com