San Francisco 49ers quarterback Colin Kaepernick has said he plans to sit out the national anthem tonight, just as he did at a preseason game against the Green Bay Packers last week and other games this summer before reporters took notice.

He says his protest will continue indefinitely. “When there’s significant change and I feel like that flag represents what it’s supposed to represent in this country, I’ll stand,” Kaepernick told reporters Sunday.

The 49ers’ game today in San Diego (7 p.m. Pacific time) is particularly noteworthy because it is Military Night, billed as a tribute to “hundreds of thousands of current and retired military personnel who live and work in San Diego,” according to the San Diego Chargers website.