Rep. Brian Mast, R-Fla., said Sunday a planned boycott of the NFL in honor of Veterans Day was "a great movement," adding the slew of player protests during the national anthem in recent months "really pisses" him off.

"It's a great movement," Mast, a U.S. Army veteran who lost both his legs when he stepped on an improvised explosive device while serving in Afghanistan in 2010, told "Fox and Friends."

"Anybody that's ever seen a flag folded and handed to some family member, a spouse or a child, anybody that's ever seen that, it's the most beautiful flag I've ever seen. Anybody that's ever seen that [flag] cascade over a casket of a friend, they know that that's not the time and place to go out there and have this kind of protest," Mast continued, referring to NFL players who refuse to stand during "The Star-Spangled Banner" to bring attention to police brutality and racial injustice.

Mast told the hosts of "Fox and Friends" he "could use a lot of really harsh words to say how much" the player protests "really pisses me off."

He implored players like Colin Kaepernick to learn from Pat Tillman, who left the NFL in 2002 to enlist in the U.S. Army after the Sept. 11 attacks.

Tillman, a former safety for the Arizona Cardinals, died in 2004 during a friendly fire incident while on tour in Afghanistan.

"That's what it looks like to be an activist coming out of the NFL," Mast said, rather than protesting "during the most important moment of that entire game when everybody comes together."

"That is patriotism," he added.