Part of the Nuclear Power Play: Screening & Discussion, presented with the Pulitzer Center.

The Pentagon is preparing for an extensive — and expensive — modernization of the country’s half-century-old land, air, and sea-based nuclear weapons. Supporters contend a fully-equipped nuclear triad is essential for national defense and deterrence, but critics say it’s time to reexamine the extent of our arsenal in a post-Cold War world. Special correspondent Jamie McIntyre reports.

Directed by Sharon Squassoni. Produced by Retro Report for the New York Times.