 There's no known connection between the lone gunman who opened fire on Trump and the Iranian plot. The development raises more questions over the Secret Service's failure to prevent the shooting targeting the former president. It's day two of the Republican National Convention, and some of the party's most notable figures will be taking the stage. Primetime speakers include Donald Trump's former primary opponents, Florida Governor Ron DeSantis, and former South Carolina Governor Nikki Haley, who's expected to speak about party unity.