WASHINGTON (AP) — As the United States was preparing a daring mission to rescue an airman whose fighter jet was shot down by Iran, there was money to be made. Users on Polymarket, the world’s largest prediction market, could place bets on when the airman would be rescued. When Rep. Seth Moulton , D-Mass., shared a screenshot of the activity on social media, an April 3 rescue was trading at 15% compared with 63% who were betting on April 4. After Moulton posted the screenshot and blasted this “