Massive Protests Bring Hong Kong Airport To A Standstill
U.S. Gymnast Simone Biles lands a historic dismount at the U.S. Gymnastics Championship, as well as becoming the first woman to perform a "triple-double". Meanwhile, in international news, Trevor Noah comments on the protests that have brought Hong Kong's airport to a standstill. Plus, the story of a heavily armed man causing havoc at a Missouri Walmart.