The Dallas Cowboys dropped to one knee for a few seconds before standing up and locking arms to sing the National Anthem during Monday Night Football. The team's owner, Jerry Jones, joined them in their unique display of solidarity with other NFL players who have knelt or sat over the weekend during the national anthem. Coach Jason Garrett also joined. Jones, 74, in the past has criticized NFL players who do so and his team's actions against the Arizona Cardinals prompted some booing from spectators. The Cardinals did not kneel but, like the Cowboys, all linked arms.