A.M. Edition for Dec. 16. The U.S. government is sending a drone-detection system to New York to help investigate a recent surge in drone sightings, even as federal agencies say there's no evidence national security is at risk. Plus, Apple plans to release thinner and foldable iPhones in a bid to revive sagging sales growth. And WSJ reporter Rebecca Picciotto explains how real-estate investment trusts are betting billions on rental homes as ownership slips out of reach for many Americans. Luke Vargas hosts. 

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