Nightly News Broadcast (Full) - July 20, 2019 | NBC Nightly News

Heat wave impacting millions across U.S., Iran releases dramatic video of seized British oil tanker, and original recorded footage of the moon landing found.

Watch “NBC Nightly News With Lester Holt” at 6:30 p.m. ET / 5:30 p.m. CT (or check your local listings). 1:58 Deadly Heat Wave: 154 Million At Risk 2:57 Heat Wave Damaging Infrastructure And Power Grids 4:11 Heat Wave's Dangerous Impact On Your Health 7:30 New Video Iran Claims Is British Tanker Seizure 8:07 British Call Tanker Seizure "A Hostile Act" 9:26 Vatican Mystery: Are Bones Of Missing Girl? 11:16 Couple Murdered On Canadian Road Trip 13:10 Rare Look Inside Chinese Tech Giant 14:31 U.S. Believes Huawei Is A "National Threat"

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Nightly News Broadcast (Full) - July 20, 2019 | NBC Nightly News