The chief executive of Kratos Defense & Security Solutions is feeling confident about the company's near-term drone sale prospects even though the Air Force recently more than tripled the competitive field for Skyborg, an emerging program for autonomous, unmanned vehicles. Asked about the growing pool of contractors during an earnings call with analysts Thursday, Eric DeMarco said, “We are playing our game,” and pointed to Kratos’ portfolio of flying drones, domestic production capacity and affordability. Kratos was among the original...