Biden Digs In, Announces Return To Campaign Trail Next Week; New Details Of Gunman's Steps Before Trump Assassination Attempt; Chaos At Airports After World's Tech Crashes All At Once; WSJ's Evan Gershkovich Sentenced 16 Years In Russia Prison. Aired 7-8p ET

[19:00:45] ERIN BURNETT, CNN HOST: OUTFRONT next: Biden seething. New reporting tonight on Biden's ire towards Nancy Pelosi as we have new details about Kamala Harris' meeting with mega donors [...]