SYRACUSE, N.Y. — Lockheed Martin is preparing to send the U.S. Air Force its advanced TPY-4 radar for further evaluation, following months of internal testing and tweaks at company facilities in rural New York. The software-defined sensor, capable of detecting and tracking everything from small drones to jets to ballistic missiles, is slated to replace the decades-old TPS-75 radar as part of the Three-Dimensional Expeditionary Long Range Radar effort, or 3DELRR. The Air Force picked Lockheed’s