 The 81-year-old telling them, I'm in this race to the end and we're going to win. Biden doing radio interviews today with hosts in Philadelphia and Madison, Wisconsin. And we'll sit down tomorrow with ABC's George Stephanopoulos. Hurricane warnings for the Cayman Islands and Mexico's Yucatan Peninsula this morning following barrels swipe of southern Jamaica. The heat, the big story across much of the U.S., California in the midst of what could be its worst heat wave in nearly two decades.