NBC Nightly News – July 20, 2026: Tragedy on the Ohio River, Rising Tensions with Iran, and a Suspect Charged in NYC Arson Trump vows Iran will “pay many times over” after three U.S. service members are killed Trump Warns Iran It Will Pay "Many Times Over" After U.S. Service Members Killed Trump’s Fierce Promise: “Iran Will Pay—Many Times Over” After U.S. Service Members Are Killed