Sheil Kapadia reports on the Seahawks' planning a pregame demonstration in the season opener on Sunday, but the team and players won't reveal what will take place. (0:46)

RENTON, Wash. -- The Seattle Seahawks are planning a pregame demonstration before Sunday's Week 1 matchup against the Miami Dolphins.

To express a desire to bring people together, our team will honor the country and flag in a pregame demonstration of unity. — Doug Baldwin Jr (@DougBaldwinJr) September 8, 2016

When asked about the team's plans, Seahawks receiver Doug Baldwin said repeatedly, "You'll see on Sunday."

Nate Boyer, a former Green Beret who spent last summer with the Seahawks, has been in contact with the team about its plans.

Talked to the @Seahawks What the team will do is a powerful sign of unification + respect for the Anthem + those that fight for our Freedom! — Nate Boyer (@NateBoyer37) September 8, 2016

During a Q&A with Fox Sports Radio, Boyer offered more details about the team's thinking.

"It has to be a team-first approach in order to get anything done," Boyer said. "Whether it is [Colin] Kaepernick's mission-changing policy or changing things on the field, you have to be unified. Showing a common goal between different walks of life is how you influence change.

"I spoke with the players, and they realize that 9/11 is a very important day in our nation's history. The Seahawks, and probably every team, will be honoring those who serve in camouflage and also those in blue who served on such a difficult day. Shortly after 9/11, our country seemed more unified than I had ever experienced and was the most unified it has been since I have been alive. Since that date, we have grown farther apart in our unity. Standing together this Sunday is key to making progress. What the team will do is a powerful sign of unification.

"In fact, that is how the Seahawks have been so successful on the field as well -- I saw it firsthand. They place so much emphasis on competition within the team and making each other better. That is crucial to the success in any mission. Whether it is a firefight, on a football field or changing society."

Boyer also met with Kaepernick earlier this month to discuss his protest and was instrumental in persuading the San Francisco 49ers quarterback to kneel -- instead of sitting -- during the national anthem. Boyer stood on the sideline while Kaepernick and teammate Eric Reid knelt during the playing of "The Star-Spangled Banner" before the 49ers' final preseason game against the San Diego Chargers on Sept. 1.

Thursday night, before the league's opener between Carolina and Denver, Broncos linebacker Brandon Marshall knelt during the national anthem.

On Wednesday, Baldwin and defensive end Cliff Avril said they supported Kaepernick and were thinking about staging some kind of protest.

"My grandfather being in the military, it hit home for me as well," Baldwin said. "It's the veterans. That's more heartening to me than anything. It's the veterans that have reached out and said that that's what they fought for. That's what they sacrificed their lives for was to give people back home under the flag, under the country, the opportunity to stand up or sit for what they believe in. So that was very heartening for me to hear that and that response from the veterans."

Added Avril: "I truly respect what Kaep is doing. I think some people are taking it out of context because they're not experiencing the same thing other people are experiencing. They can't really see it. But as a person that does see it and does see what's really going on out here, I definitely could see me doing something about it as well."

Seahawks cornerback Jeremy Lane sat on the bench during the national anthem of the team's final preseason game as a show of support for Kaepernick.

Linebacker Bobby Wagner hinted Wednesday that the players were considering doing something as a team.

"Anything that we want to do, it's not going to be individual," Wagner said. "It's going to be a team thing because that's what the world needs to see. The world needs to see people coming together versus being individuals."