Photos: NASCAR at Knoxville Raceway Friday, July 9, 2021

KNOXVILLE, IOWA - JULY 09: A woman on horseback carries an American flag during the national anthem prior to the NASCAR Camping World Truck Series Corn Belt 150 presented by Premier Chevy Dealers at Knoxville Raceway on July 09, 2021 in Knoxville, Iowa. (Photo by James Gilbert/Getty Images)