Police in Highland Park, Illinois say the July 4th parade shooting suspect confessed to disguising himself as a woman and climbing onto a rooftop, where he unleashed a hail of bullets on the crowd below him. We have live reporting with the latest from Highland Park about a -possible second attack. It comes as questions mount about how the suspect was able to buy the guns. We also learn more about other heartbreaking stories from the families of the victims. Plus, police in Richmond, Virginia say a tip from a “hero citizen” helped prevent a mass shooting on July 4th, and "saved numerous lives." And U.K. Prime Minister Boris Johnson refuses to quit even after more than 40 senior government officials resigned from Parliament in the last 24 hours. Also, how you could get free Grubhub delivery for a year thanks to Amazon.