Top Technology in Business StoriesAmazon says its Prime Air drones recently completed 100 deliveries in two small U.S. markets. Meanwhile, competitors like Alphabet’s Wing and Walmart partner Zipline have made hundreds of thousands of deliveries, largely outside of the regulatory confines of the U.S. in markets like Australia and Africa. We went to Lockeford, California, a 4,000-person town that’s one of two places where Amazon has begun deliveries. But we saw no aerial activity and talked to residents who hadn’t either. We also visited drone companies Wing, Zipline and DroneUp to see their deliveries in action and ask about clearing Federal Aviation Administration hurdles. Here’s how Amazon fell behind, despite all drone companies facing the same stringent regulations here in the U.S.