A pilot takes a picture of a nearby jet, 1,000 feet above, and then uses AirDrop to send the photo to the pilot of the other jet.
(It’s a cool idea, but I’m not sure it’s real… can AirDrop really reach that far? Bluetooth certainly can’t. Can Wi-Fi point-to-point reach that far? What’s the radio environment like up there? Is it clearer or full of interference? Why was the photo taken “Yesterday”?)