Is Fireman Ed Anzalone leading Jets cheers or is this the face of a man getting tased in the tuckus? (Elsa/Getty Images)

But one Cowboys fan either failed to pick one up, or decided to completely disregard it altogether when he used a stun gun on three fans during the game.

Leroy McKelvey, a 59-year-old wearing a Dallas jersey at the game, and three others refused to stand or remove their hats for the national anthem on the 10th anniversary of the Sept. 11 terrorist attacks, which understandably irked a Jets fan at the end of his row...who also happened to be a Marine.

A police officer told the Cliffview Pilot “the Marine tells McKelvey he better not have to get out of the row ’cause he won’t let him out.”

McKelvey then whipped out a stun gun and zapped the Marine and two others. A South Carolina resident, McKelvey was arrested and charged with aggravated assault and two weapons counts. He was released from the Bergen County Jail on $22,500 bail.

(Deadspin has a cell phone video of the incident.)

A brawl in the stands at a Raiders-49ers preseason game has already quashed the immediate future of the Bay rivalry, but this latest incident should raise serious concerns about stadium safety after McKelvey was able to sneak his weapon through stadium security — particularly on the anniversary of 9/11.

And while the Jets consider the ramifications of the breach of safety, we can consider just how many aspects of the stadium’s conduct code McKelvey blatantly violated.

Let’s take it from the top:

• Respecting each other as well as our employees — No.

• Consuming alcoholic beverages in a responsible manner — Unclear.

• Refraining from fighting, throwing items or using foul/abusive language or gestures — Nope.

• Not displaying indecent messages on clothing — Do Cowboys jerseys count?

• Not creating a disruption to the progress of the event by their actions — Definitely no.

• Showing their ticket when requested and only sitting in their ticketed seat — From the video it certainly appears McKelvey took liberties with the second half of this one.

• Following instructions from staff regarding stadium operations and emergency procedures — If the staff wrote the code of conduct, McKelvey failed this one, too.

• Allowing each other to be free to support their team while remaining respectful and courteous to the fellow patrons, referees, opposing team fans and players — No, no, and definitely no.

(Correction: A previous version of this post identified the weapon used as a “taser.” Taser is a specific stun gun brand name, and the device McKelvey used is not believed to have been manufactured by Taser.)