An Air Force One incident: The emergency slide was mistakenly deployed. A source briefed on the situation said that military personnel accidentally deployed the emergency slide, delaying President Trump’s takeoff to Dallas. Plus, President Trump says the Iran war will end ‘after the election’. The president’s comments come as Republicans gather in Dallas for a two-day convention aimed at boosting the party ahead of the midterms. A researcher from a top artificial intelligence lab resigned and posted to social media saying that there are those who work in A.I. who believe their very creations could kill all of mankind within a decade. Apple’s new CEO debuted the company’s first foldable iPhone. And chilling video from Ohio shows an attorney now convicted of attempting to shoot his ex-wife in a restaurant. A hero waiter tackled him. That waiter speaks with NBC News.