Mr. Nikischer posted a photo on Facebook of himself leaving the stadium Sunday, saying he was finally "pushed" to his "limit".
Erich Nikischer worked at Buffalo's New Era Field for almost 30 years before Sunday when he walked out of the stadium for good after seeing Bills players protest the national anthem.
"A lot of people have fought and died for this country and the song and the flag signify that to me".
But Nikischer was particularly angered by the protests, and he went on to explain why. "I believe people have the right to protest; I just don't believe that's the proper venue for it".
Hurricane Maria expected to pass close to the Carolinas next week
The National Weather Service in Morehead City, North Carolina, said significant beach erosion is expected north of Cape Lookout. Maria, now a Category 1 hurricane, will continue to track to the north-northwest away from the Caribbean early this week.
Nikischer, who first started working security for the Bills in the early 1990s, said his father called him after he quit and was "in tears with pride".
"I feel like there's a certain time or place where you should make a stand for something, and we both agree that it's not in your work force, your work field", Rachel Bush said.
"I will miss the brotherhood I had with my [co-workers] on the cart crew", Nikischer wrote.
"I will never step foot in that place again, I will never watch an NFL football game again until this ends", he said. Lucian Chalfen, director of public information for the court system, confirmed Monday that Nikischer has been employed by the court system since 2007 and now works as a court officer in Buffalo, earning $75,389 annually. He made a decision to quit his job immediately as a result of the protesting players. The team's owners, Terry and Kim Pegula, released a statement calling Trump's commentary "divisive and disrespectful to the entire National Football League".
He's also not alone in his antipathy toward the take-a-knee movement. Others who didn't kneel stood, arms locked coaches and owners. "The picture is of me walking out after the disgraceful display on the field".