Johnson's ATA Black Belt Academy features martial arts for kids and adults. Including ATA Taekwondo, Gracie (Brazilian) Jiu-Jitsu, weapons training, self-defense, discipline and respect and more. Check us out online and see why we are Sioux City's premier martial arts academy. Kids, learn discipline, respect and confidence while having a blast! Adults, get in shape, lose weight and learn Self-Defense at the same time! So if you live in the following towns, Johnson's ATA is close enough for you: Sioux City, Hinton, Moville, Lawton, Bronson, Sergeant Bluff in Iowa, North Sioux City, Dakota Dunes in South Dakota, and South Sioux City, Dakota City in Nebraska.