Radar experts at the Lockheed Martin Corp. Mission Systems & Sensors segment in Syracuse, N.Y., will upgrade U.S. Air Force AN/FPS-117 long-range radars in Alaska and Canada under terms of a $16.4 million contract modification. Lockheed Martin will do the work as part of the AN/FPS-117 surveillance radar essential parts replacement program. Awarding the contract were officials of the Air Force Life Cycle Management Center at Hill Air Force Base, Utah. The AN/FPS-117 Radar System is a 3D (azimuth-range-height) phased-array antenna radar that is minimally attended or unattended. The system is a low-power radar with a range of 200 to 250 nautical miles, and operates with an L-band pencil beam, solid-state transmitter, and deacon interrogator.