San Francisco 49ers quarterback Colin Kaepernick, middle, sits during the national anthem before an NFL preseason football game against the San Diego Chargers, Sept. 1, 2016, in San Diego.
San Francisco 49ers quarterback Colin Kaepernick, middle, sits during the national anthem before an NFL preseason football game against the San Diego Chargers, Sept. 1, 2016, in San Diego. Chris Carlson AP file
San Francisco 49ers quarterback Colin Kaepernick, middle, sits during the national anthem before an NFL preseason football game against the San Diego Chargers, Sept. 1, 2016, in San Diego. Chris Carlson AP file