retaliation from china. that sent stocks tanking. the dow is now down 3% for the year. police releasing three hours of the body camera footage from the las vegas massacre. two police officers enter the hotel suite following the shooting. >> breach, breach, breach. >> with you. with you. >> okay. we have one suspect down. 419 inside. >> the foot aage shows police a security rushing through the lobby floor discussing tactics to find stephen paddock and stop him. he injured hundreds and killed 58 from the 37th floor of the mandalay bay. the bill in iowa would make it illegal for doctors to